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Finding the Fourth Proportional to 124,534.11, 171,856.18 and 70,819.11

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Solution

The fourth proportional to 124,534.11, 171,856.18 and 70,819.11 is: 97,729.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,534.11 : 171,856.18 = 70,819.11 : x
  2. Step 2: Convert to fraction form
    124,534.11/171,856.18 = 70,819.11/x
  3. Step 3: Cross multiply
    124,534.11x = 171,856.18 × 70,819.11
  4. Step 4: Simplify right side
    124,534.11x = 12,170,701,804.12
  5. Step 5: Solve for x
    x = 12,170,701,804.12/124,534.11
  6. Step 6: Final answer
    x = 97,729.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.