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Finding the Fourth Proportional to 124,630.83, 171,989.67 and 68,042.20

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Solution

The fourth proportional to 124,630.83, 171,989.67 and 68,042.20 is: 93,897.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,630.83 : 171,989.67 = 68,042.20 : x
  2. Step 2: Convert to fraction form
    124,630.83/171,989.67 = 68,042.20/x
  3. Step 3: Cross multiply
    124,630.83x = 171,989.67 × 68,042.20
  4. Step 4: Simplify right side
    124,630.83x = 11,702,555,677.04
  5. Step 5: Solve for x
    x = 11,702,555,677.04/124,630.83
  6. Step 6: Final answer
    x = 93,897.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.