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Finding the Fourth Proportional to 43,207.40, 64,713.90 and 25,711.40

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Solution

The fourth proportional to 43,207.40, 64,713.90 and 25,711.40 is: 38,509.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,207.40 : 64,713.90 = 25,711.40 : x
  2. Step 2: Convert to fraction form
    43,207.40/64,713.90 = 25,711.40/x
  3. Step 3: Cross multiply
    43,207.40x = 64,713.90 × 25,711.40
  4. Step 4: Simplify right side
    43,207.40x = 1,663,884,968.46
  5. Step 5: Solve for x
    x = 1,663,884,968.46/43,207.40
  6. Step 6: Final answer
    x = 38,509.26

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.