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Finding the Fourth Proportional to 83,079.60, 124,538.40 and 47,504.40

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Solution

The fourth proportional to 83,079.60, 124,538.40 and 47,504.40 is: 71,210.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,079.60 : 124,538.40 = 47,504.40 : x
  2. Step 2: Convert to fraction form
    83,079.60/124,538.40 = 47,504.40/x
  3. Step 3: Cross multiply
    83,079.60x = 124,538.40 × 47,504.40
  4. Step 4: Simplify right side
    83,079.60x = 5,916,121,968.96
  5. Step 5: Solve for x
    x = 5,916,121,968.96/83,079.60
  6. Step 6: Final answer
    x = 71,210.28

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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.