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Finding the Fourth Proportional to 125,940.99, 173,780.19 and 71,484.69

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Solution

The fourth proportional to 125,940.99, 173,780.19 and 71,484.69 is: 98,638.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,940.99 : 173,780.19 = 71,484.69 : x
  2. Step 2: Convert to fraction form
    125,940.99/173,780.19 = 71,484.69/x
  3. Step 3: Cross multiply
    125,940.99x = 173,780.19 × 71,484.69
  4. Step 4: Simplify right side
    125,940.99x = 12,422,623,010.29
  5. Step 5: Solve for x
    x = 12,422,623,010.29/125,940.99
  6. Step 6: Final answer
    x = 98,638.44

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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.