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Finding the Fourth Proportional to 60,782.62, 91,205.52 and 45,987.16

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Solution

The fourth proportional to 60,782.62, 91,205.52 and 45,987.16 is: 69,004.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,782.62 : 91,205.52 = 45,987.16 : x
  2. Step 2: Convert to fraction form
    60,782.62/91,205.52 = 45,987.16/x
  3. Step 3: Cross multiply
    60,782.62x = 91,205.52 × 45,987.16
  4. Step 4: Simplify right side
    60,782.62x = 4,194,282,841.12
  5. Step 5: Solve for x
    x = 4,194,282,841.12/60,782.62
  6. Step 6: Final answer
    x = 69,004.64

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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.