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Finding the Fourth Proportional to 153,869.30, 216,039.10 and 153,869.30

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Solution

The fourth proportional to 153,869.30, 216,039.10 and 153,869.30 is: 216,039.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,869.30 : 216,039.10 = 153,869.30 : x
  2. Step 2: Convert to fraction form
    153,869.30/216,039.10 = 153,869.30/x
  3. Step 3: Cross multiply
    153,869.30x = 216,039.10 × 153,869.30
  4. Step 4: Simplify right side
    153,869.30x = 33,241,785,089.63
  5. Step 5: Solve for x
    x = 33,241,785,089.63/153,869.30
  6. Step 6: Final answer
    x = 216,039.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.