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Finding the Fourth Proportional to 60,783.40, 83,878.90 and 38,134.59

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Solution

The fourth proportional to 60,783.40, 83,878.90 and 38,134.59 is: 52,624.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,783.40 : 83,878.90 = 38,134.59 : x
  2. Step 2: Convert to fraction form
    60,783.40/83,878.90 = 38,134.59/x
  3. Step 3: Cross multiply
    60,783.40x = 83,878.90 × 38,134.59
  4. Step 4: Simplify right side
    60,783.40x = 3,198,687,461.15
  5. Step 5: Solve for x
    x = 3,198,687,461.15/60,783.40
  6. Step 6: Final answer
    x = 52,624.36

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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.