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Finding the Fourth Proportional to 261,318.98, 360,627.24 and 153,869.24

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Solution

The fourth proportional to 261,318.98, 360,627.24 and 153,869.24 is: 212,343.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,318.98 : 360,627.24 = 153,869.24 : x
  2. Step 2: Convert to fraction form
    261,318.98/360,627.24 = 153,869.24/x
  3. Step 3: Cross multiply
    261,318.98x = 360,627.24 × 153,869.24
  4. Step 4: Simplify right side
    261,318.98x = 55,489,439,342.10
  5. Step 5: Solve for x
    x = 55,489,439,342.10/261,318.98
  6. Step 6: Final answer
    x = 212,343.70

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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.