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Finding the Fourth Proportional to 60,647.90, 90,971.85 and 60,647.90

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Solution

The fourth proportional to 60,647.90, 90,971.85 and 60,647.90 is: 90,971.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,647.90 : 90,971.85 = 60,647.90 : x
  2. Step 2: Convert to fraction form
    60,647.90/90,971.85 = 60,647.90/x
  3. Step 3: Cross multiply
    60,647.90x = 90,971.85 × 60,647.90
  4. Step 4: Simplify right side
    60,647.90x = 5,517,251,661.62
  5. Step 5: Solve for x
    x = 5,517,251,661.62/60,647.90
  6. Step 6: Final answer
    x = 90,971.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.