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Finding the Fourth Proportional to 60,718.80, 91,078.20 and 43,004.10

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Solution

The fourth proportional to 60,718.80, 91,078.20 and 43,004.10 is: 64,506.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,718.80 : 91,078.20 = 43,004.10 : x
  2. Step 2: Convert to fraction form
    60,718.80/91,078.20 = 43,004.10/x
  3. Step 3: Cross multiply
    60,718.80x = 91,078.20 × 43,004.10
  4. Step 4: Simplify right side
    60,718.80x = 3,916,736,020.62
  5. Step 5: Solve for x
    x = 3,916,736,020.62/60,718.80
  6. Step 6: Final answer
    x = 64,506.15

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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.