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Finding the Fourth Proportional to 61,928.60, 85,487.56 and 41,812.70

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Solution

The fourth proportional to 61,928.60, 85,487.56 and 41,812.70 is: 57,719.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,928.60 : 85,487.56 = 41,812.70 : x
  2. Step 2: Convert to fraction form
    61,928.60/85,487.56 = 41,812.70/x
  3. Step 3: Cross multiply
    61,928.60x = 85,487.56 × 41,812.70
  4. Step 4: Simplify right side
    61,928.60x = 3,574,465,168.04
  5. Step 5: Solve for x
    x = 3,574,465,168.04/61,928.60
  6. Step 6: Final answer
    x = 57,719.14

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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.