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Finding the Fourth Proportional to 82,700.80, 124,051.20 and 59,372.80

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Solution

The fourth proportional to 82,700.80, 124,051.20 and 59,372.80 is: 89,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,700.80 : 124,051.20 = 59,372.80 : x
  2. Step 2: Convert to fraction form
    82,700.80/124,051.20 = 59,372.80/x
  3. Step 3: Cross multiply
    82,700.80x = 124,051.20 × 59,372.80
  4. Step 4: Simplify right side
    82,700.80x = 7,365,267,087.36
  5. Step 5: Solve for x
    x = 7,365,267,087.36/82,700.80
  6. Step 6: Final answer
    x = 89,059.20

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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.