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Finding the Fourth Proportional to 57,792.92, 86,700.14 and 18,339.40

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Solution

The fourth proportional to 57,792.92, 86,700.14 and 18,339.40 is: 27,512.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,792.92 : 86,700.14 = 18,339.40 : x
  2. Step 2: Convert to fraction form
    57,792.92/86,700.14 = 18,339.40/x
  3. Step 3: Cross multiply
    57,792.92x = 86,700.14 × 18,339.40
  4. Step 4: Simplify right side
    57,792.92x = 1,590,028,547.52
  5. Step 5: Solve for x
    x = 1,590,028,547.52/57,792.92
  6. Step 6: Final answer
    x = 27,512.51

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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.