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Finding the Fourth Proportional to 82,702.80, 124,054.20 and 60,411.60

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Solution

The fourth proportional to 82,702.80, 124,054.20 and 60,411.60 is: 90,617.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,702.80 : 124,054.20 = 60,411.60 : x
  2. Step 2: Convert to fraction form
    82,702.80/124,054.20 = 60,411.60/x
  3. Step 3: Cross multiply
    82,702.80x = 124,054.20 × 60,411.60
  4. Step 4: Simplify right side
    82,702.80x = 7,494,312,708.72
  5. Step 5: Solve for x
    x = 7,494,312,708.72/82,702.80
  6. Step 6: Final answer
    x = 90,617.40

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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.