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Finding the Fourth Proportional to 60,420.78, 83,381.76 and 33,565.74

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Solution

The fourth proportional to 60,420.78, 83,381.76 and 33,565.74 is: 46,321.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,420.78 : 83,381.76 = 33,565.74 : x
  2. Step 2: Convert to fraction form
    60,420.78/83,381.76 = 33,565.74/x
  3. Step 3: Cross multiply
    60,420.78x = 83,381.76 × 33,565.74
  4. Step 4: Simplify right side
    60,420.78x = 2,798,770,476.90
  5. Step 5: Solve for x
    x = 2,798,770,476.90/60,420.78
  6. Step 6: Final answer
    x = 46,321.32

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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.