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Finding the Fourth Proportional to 113,590.92, 156,756.10 and 65,872.58

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Solution

The fourth proportional to 113,590.92, 156,756.10 and 65,872.58 is: 90,904.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,590.92 : 156,756.10 = 65,872.58 : x
  2. Step 2: Convert to fraction form
    113,590.92/156,756.10 = 65,872.58/x
  3. Step 3: Cross multiply
    113,590.92x = 156,756.10 × 65,872.58
  4. Step 4: Simplify right side
    113,590.92x = 10,325,928,737.74
  5. Step 5: Solve for x
    x = 10,325,928,737.74/113,590.92
  6. Step 6: Final answer
    x = 90,904.53

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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.