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Finding the Fourth Proportional to 78,710.39, 108,622.88 and 44,718.26

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Solution

The fourth proportional to 78,710.39, 108,622.88 and 44,718.26 is: 61,712.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,710.39 : 108,622.88 = 44,718.26 : x
  2. Step 2: Convert to fraction form
    78,710.39/108,622.88 = 44,718.26/x
  3. Step 3: Cross multiply
    78,710.39x = 108,622.88 × 44,718.26
  4. Step 4: Simplify right side
    78,710.39x = 4,857,425,423.08
  5. Step 5: Solve for x
    x = 4,857,425,423.08/78,710.39
  6. Step 6: Final answer
    x = 61,712.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.