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Finding the Fourth Proportional to 82,957.90, 124,436.85 and 56,713.90

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Solution

The fourth proportional to 82,957.90, 124,436.85 and 56,713.90 is: 85,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,957.90 : 124,436.85 = 56,713.90 : x
  2. Step 2: Convert to fraction form
    82,957.90/124,436.85 = 56,713.90/x
  3. Step 3: Cross multiply
    82,957.90x = 124,436.85 × 56,713.90
  4. Step 4: Simplify right side
    82,957.90x = 7,057,299,067.22
  5. Step 5: Solve for x
    x = 7,057,299,067.22/82,957.90
  6. Step 6: Final answer
    x = 85,070.85

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1.5x scale

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.