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Finding the Fourth Proportional to 719,428.32, 992,956.14 and 413,718.48

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Solution

The fourth proportional to 719,428.32, 992,956.14 and 413,718.48 is: 571,014.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,428.32 : 992,956.14 = 413,718.48 : x
  2. Step 2: Convert to fraction form
    719,428.32/992,956.14 = 413,718.48/x
  3. Step 3: Cross multiply
    719,428.32x = 992,956.14 × 413,718.48
  4. Step 4: Simplify right side
    719,428.32x = 410,804,304,947.47
  5. Step 5: Solve for x
    x = 410,804,304,947.47/719,428.32
  6. Step 6: Final answer
    x = 571,014.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.