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Finding the Fourth Proportional to 57,707.10, 86,551.95 and 18,259.08

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Solution

The fourth proportional to 57,707.10, 86,551.95 and 18,259.08 is: 27,385.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,707.10 : 86,551.95 = 18,259.08 : x
  2. Step 2: Convert to fraction form
    57,707.10/86,551.95 = 18,259.08/x
  3. Step 3: Cross multiply
    57,707.10x = 86,551.95 × 18,259.08
  4. Step 4: Simplify right side
    57,707.10x = 1,580,358,979.21
  5. Step 5: Solve for x
    x = 1,580,358,979.21/57,707.10
  6. Step 6: Final answer
    x = 27,385.87

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Why These Related Problems?

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