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Finding the Fourth Proportional to 82,702.98, 124,117.20 and 60,573.78

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Solution

The fourth proportional to 82,702.98, 124,117.20 and 60,573.78 is: 90,906.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,702.98 : 124,117.20 = 60,573.78 : x
  2. Step 2: Convert to fraction form
    82,702.98/124,117.20 = 60,573.78/x
  3. Step 3: Cross multiply
    82,702.98x = 124,117.20 × 60,573.78
  4. Step 4: Simplify right side
    82,702.98x = 7,518,247,967.02
  5. Step 5: Solve for x
    x = 7,518,247,967.02/82,702.98
  6. Step 6: Final answer
    x = 90,906.62

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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.