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Finding the Fourth Proportional to 517,921.68, 714,800.04 and 291,611.28

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Solution

The fourth proportional to 517,921.68, 714,800.04 and 291,611.28 is: 402,461.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,921.68 : 714,800.04 = 291,611.28 : x
  2. Step 2: Convert to fraction form
    517,921.68/714,800.04 = 291,611.28/x
  3. Step 3: Cross multiply
    517,921.68x = 714,800.04 × 291,611.28
  4. Step 4: Simplify right side
    517,921.68x = 208,443,754,608.45
  5. Step 5: Solve for x
    x = 208,443,754,608.45/517,921.68
  6. Step 6: Final answer
    x = 402,461.92

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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.