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Finding the Fourth Proportional to 218,345.28, 327,407.13 and 99,915.14

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Solution

The fourth proportional to 218,345.28, 327,407.13 and 99,915.14 is: 149,822.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,345.28 : 327,407.13 = 99,915.14 : x
  2. Step 2: Convert to fraction form
    218,345.28/327,407.13 = 99,915.14/x
  3. Step 3: Cross multiply
    218,345.28x = 327,407.13 × 99,915.14
  4. Step 4: Simplify right side
    218,345.28x = 32,712,927,593.91
  5. Step 5: Solve for x
    x = 32,712,927,593.91/218,345.28
  6. Step 6: Final answer
    x = 149,822.00

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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.