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Finding the Fourth Proportional to 140,347.87, 193,677.78 and 76,684.30

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Solution

The fourth proportional to 140,347.87, 193,677.78 and 76,684.30 is: 105,823.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,347.87 : 193,677.78 = 76,684.30 : x
  2. Step 2: Convert to fraction form
    140,347.87/193,677.78 = 76,684.30/x
  3. Step 3: Cross multiply
    140,347.87x = 193,677.78 × 76,684.30
  4. Step 4: Simplify right side
    140,347.87x = 14,852,044,984.85
  5. Step 5: Solve for x
    x = 14,852,044,984.85/140,347.87
  6. Step 6: Final answer
    x = 105,823.09

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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.