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Finding the Fourth Proportional to 63,603.80, 87,878.22 and 47,740.76

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Solution

The fourth proportional to 63,603.80, 87,878.22 and 47,740.76 is: 65,961.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,603.80 : 87,878.22 = 47,740.76 : x
  2. Step 2: Convert to fraction form
    63,603.80/87,878.22 = 47,740.76/x
  3. Step 3: Cross multiply
    63,603.80x = 87,878.22 × 47,740.76
  4. Step 4: Simplify right side
    63,603.80x = 4,195,373,010.25
  5. Step 5: Solve for x
    x = 4,195,373,010.25/63,603.80
  6. Step 6: Final answer
    x = 65,961.04

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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.