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Finding the Fourth Proportional to 112,703.84, 155,531.31 and 62,402.84

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Solution

The fourth proportional to 112,703.84, 155,531.31 and 62,402.84 is: 86,115.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,703.84 : 155,531.31 = 62,402.84 : x
  2. Step 2: Convert to fraction form
    112,703.84/155,531.31 = 62,402.84/x
  3. Step 3: Cross multiply
    112,703.84x = 155,531.31 × 62,402.84
  4. Step 4: Simplify right side
    112,703.84x = 9,705,595,452.92
  5. Step 5: Solve for x
    x = 9,705,595,452.92/112,703.84
  6. Step 6: Final answer
    x = 86,115.93

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1.5x scale

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.