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Finding the Fourth Proportional to 56,390.55, 84,470.88 and 26,718.42

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Solution

The fourth proportional to 56,390.55, 84,470.88 and 26,718.42 is: 40,023.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,390.55 : 84,470.88 = 26,718.42 : x
  2. Step 2: Convert to fraction form
    56,390.55/84,470.88 = 26,718.42/x
  3. Step 3: Cross multiply
    56,390.55x = 84,470.88 × 26,718.42
  4. Step 4: Simplify right side
    56,390.55x = 2,256,928,449.61
  5. Step 5: Solve for x
    x = 2,256,928,449.61/56,390.55
  6. Step 6: Final answer
    x = 40,023.17

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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.