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Finding the Fourth Proportional to 607,139.70, 910,709.55 and 233,171.70

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Solution

The fourth proportional to 607,139.70, 910,709.55 and 233,171.70 is: 349,757.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,139.70 : 910,709.55 = 233,171.70 : x
  2. Step 2: Convert to fraction form
    607,139.70/910,709.55 = 233,171.70/x
  3. Step 3: Cross multiply
    607,139.70x = 910,709.55 × 233,171.70
  4. Step 4: Simplify right side
    607,139.70x = 212,351,693,979.74
  5. Step 5: Solve for x
    x = 212,351,693,979.74/607,139.70
  6. Step 6: Final answer
    x = 349,757.55

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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.