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Finding the Fourth Proportional to 60,645.85, 85,079.15 and 60,645.85

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Solution

The fourth proportional to 60,645.85, 85,079.15 and 60,645.85 is: 85,079.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,645.85 : 85,079.15 = 60,645.85 : x
  2. Step 2: Convert to fraction form
    60,645.85/85,079.15 = 60,645.85/x
  3. Step 3: Cross multiply
    60,645.85x = 85,079.15 × 60,645.85
  4. Step 4: Simplify right side
    60,645.85x = 5,159,697,369.03
  5. Step 5: Solve for x
    x = 5,159,697,369.03/60,645.85
  6. Step 6: Final answer
    x = 85,079.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.