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Finding the Fourth Proportional to 61,969.68, 85,474.92 and 40,742.16

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Solution

The fourth proportional to 61,969.68, 85,474.92 and 40,742.16 is: 56,195.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,969.68 : 85,474.92 = 40,742.16 : x
  2. Step 2: Convert to fraction form
    61,969.68/85,474.92 = 40,742.16/x
  3. Step 3: Cross multiply
    61,969.68x = 85,474.92 × 40,742.16
  4. Step 4: Simplify right side
    61,969.68x = 3,482,432,866.63
  5. Step 5: Solve for x
    x = 3,482,432,866.63/61,969.68
  6. Step 6: Final answer
    x = 56,195.75

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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.