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Finding the Fourth Proportional to 92,746.53, 138,722.76 and 86,023.53

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Solution

The fourth proportional to 92,746.53, 138,722.76 and 86,023.53 is: 128,667.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,746.53 : 138,722.76 = 86,023.53 : x
  2. Step 2: Convert to fraction form
    92,746.53/138,722.76 = 86,023.53/x
  3. Step 3: Cross multiply
    92,746.53x = 138,722.76 × 86,023.53
  4. Step 4: Simplify right side
    92,746.53x = 11,933,421,506.54
  5. Step 5: Solve for x
    x = 11,933,421,506.54/92,746.53
  6. Step 6: Final answer
    x = 128,667.04

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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.