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Finding the Fourth Proportional to 38,687.60, 53,412.19 and 25,281.29

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Solution

The fourth proportional to 38,687.60, 53,412.19 and 25,281.29 is: 34,903.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,687.60 : 53,412.19 = 25,281.29 : x
  2. Step 2: Convert to fraction form
    38,687.60/53,412.19 = 25,281.29/x
  3. Step 3: Cross multiply
    38,687.60x = 53,412.19 × 25,281.29
  4. Step 4: Simplify right side
    38,687.60x = 1,350,328,938.52
  5. Step 5: Solve for x
    x = 1,350,328,938.52/38,687.60
  6. Step 6: Final answer
    x = 34,903.40

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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.