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Finding the Fourth Proportional to 558,332.48, 771,288 and 432,629.12

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Solution

The fourth proportional to 558,332.48, 771,288 and 432,629.12 is: 597,639.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,332.48 : 771,288 = 432,629.12 : x
  2. Step 2: Convert to fraction form
    558,332.48/771,288 = 432,629.12/x
  3. Step 3: Cross multiply
    558,332.48x = 771,288 × 432,629.12
  4. Step 4: Simplify right side
    558,332.48x = 333,681,648,706.56
  5. Step 5: Solve for x
    x = 333,681,648,706.56/558,332.48
  6. Step 6: Final answer
    x = 597,639.69

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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.