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Finding the Fourth Proportional to 69,209.55, 103,668.52 and 56,087.55

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Solution

The fourth proportional to 69,209.55, 103,668.52 and 56,087.55 is: 84,013.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,209.55 : 103,668.52 = 56,087.55 : x
  2. Step 2: Convert to fraction form
    69,209.55/103,668.52 = 56,087.55/x
  3. Step 3: Cross multiply
    69,209.55x = 103,668.52 × 56,087.55
  4. Step 4: Simplify right side
    69,209.55x = 5,814,513,298.93
  5. Step 5: Solve for x
    x = 5,814,513,298.93/69,209.55
  6. Step 6: Final answer
    x = 84,013.16

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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.