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Finding the Fourth Proportional to 169,655,123.70, 254,482,685.55 and 83,561,681.70

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Solution

The fourth proportional to 169,655,123.70, 254,482,685.55 and 83,561,681.70 is: 125,342,522.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,655,123.70 : 254,482,685.55 = 83,561,681.70 : x
  2. Step 2: Convert to fraction form
    169,655,123.70/254,482,685.55 = 83,561,681.70/x
  3. Step 3: Cross multiply
    169,655,123.70x = 254,482,685.55 × 83,561,681.70
  4. Step 4: Simplify right side
    169,655,123.70x = 21,265,001,168,090,292
  5. Step 5: Solve for x
    x = 21,265,001,168,090,292/169,655,123.70
  6. Step 6: Final answer
    x = 125,342,522.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.