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Finding the Fourth Proportional to 71,464.92, 98,615.08 and 39,633.72

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Solution

The fourth proportional to 71,464.92, 98,615.08 and 39,633.72 is: 54,690.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,464.92 : 98,615.08 = 39,633.72 : x
  2. Step 2: Convert to fraction form
    71,464.92/98,615.08 = 39,633.72/x
  3. Step 3: Cross multiply
    71,464.92x = 98,615.08 × 39,633.72
  4. Step 4: Simplify right side
    71,464.92x = 3,908,482,468.50
  5. Step 5: Solve for x
    x = 3,908,482,468.50/71,464.92
  6. Step 6: Final answer
    x = 54,690.92

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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.