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Finding the Fourth Proportional to 468,781.16, 646,871.70 and 262,011.40

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Solution

The fourth proportional to 468,781.16, 646,871.70 and 262,011.40 is: 361,549.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,781.16 : 646,871.70 = 262,011.40 : x
  2. Step 2: Convert to fraction form
    468,781.16/646,871.70 = 262,011.40/x
  3. Step 3: Cross multiply
    468,781.16x = 646,871.70 × 262,011.40
  4. Step 4: Simplify right side
    468,781.16x = 169,487,759,737.38
  5. Step 5: Solve for x
    x = 169,487,759,737.38/468,781.16
  6. Step 6: Final answer
    x = 361,549.85

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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.