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Finding the Fourth Proportional to 124,149.29, 171,314.16 and 69,688.98

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Solution

The fourth proportional to 124,149.29, 171,314.16 and 69,688.98 is: 96,164.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,149.29 : 171,314.16 = 69,688.98 : x
  2. Step 2: Convert to fraction form
    124,149.29/171,314.16 = 69,688.98/x
  3. Step 3: Cross multiply
    124,149.29x = 171,314.16 × 69,688.98
  4. Step 4: Simplify right side
    124,149.29x = 11,938,709,069.96
  5. Step 5: Solve for x
    x = 11,938,709,069.96/124,149.29
  6. Step 6: Final answer
    x = 96,164.14

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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.