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Finding the Fourth Proportional to 83,776.10, 125,664.15 and 74,590.70

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Solution

The fourth proportional to 83,776.10, 125,664.15 and 74,590.70 is: 111,886.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,776.10 : 125,664.15 = 74,590.70 : x
  2. Step 2: Convert to fraction form
    83,776.10/125,664.15 = 74,590.70/x
  3. Step 3: Cross multiply
    83,776.10x = 125,664.15 × 74,590.70
  4. Step 4: Simplify right side
    83,776.10x = 9,373,376,913.41
  5. Step 5: Solve for x
    x = 9,373,376,913.41/83,776.10
  6. Step 6: Final answer
    x = 111,886.05

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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.