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Finding the Fourth Proportional to 261,648.50, 392,531.28 and 95,436.50

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Solution

The fourth proportional to 261,648.50, 392,531.28 and 95,436.50 is: 143,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,648.50 : 392,531.28 = 95,436.50 : x
  2. Step 2: Convert to fraction form
    261,648.50/392,531.28 = 95,436.50/x
  3. Step 3: Cross multiply
    261,648.50x = 392,531.28 × 95,436.50
  4. Step 4: Simplify right side
    261,648.50x = 37,461,811,503.72
  5. Step 5: Solve for x
    x = 37,461,811,503.72/261,648.50
  6. Step 6: Final answer
    x = 143,176.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.