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Finding the Fourth Proportional to 124,712.52, 187,910.64 and 103,012.08

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Solution

The fourth proportional to 124,712.52, 187,910.64 and 103,012.08 is: 155,213.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,712.52 : 187,910.64 = 103,012.08 : x
  2. Step 2: Convert to fraction form
    124,712.52/187,910.64 = 103,012.08/x
  3. Step 3: Cross multiply
    124,712.52x = 187,910.64 × 103,012.08
  4. Step 4: Simplify right side
    124,712.52x = 19,357,065,880.53
  5. Step 5: Solve for x
    x = 19,357,065,880.53/124,712.52
  6. Step 6: Final answer
    x = 155,213.49

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.