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Finding the Fourth Proportional to 60,783.70, 83,920.62 and 38,153.74

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Solution

The fourth proportional to 60,783.70, 83,920.62 and 38,153.74 is: 52,676.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,783.70 : 83,920.62 = 38,153.74 : x
  2. Step 2: Convert to fraction form
    60,783.70/83,920.62 = 38,153.74/x
  3. Step 3: Cross multiply
    60,783.70x = 83,920.62 × 38,153.74
  4. Step 4: Simplify right side
    60,783.70x = 3,201,885,516.12
  5. Step 5: Solve for x
    x = 3,201,885,516.12/60,783.70
  6. Step 6: Final answer
    x = 52,676.71

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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.