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Finding the Fourth Proportional to 78,491.98, 108,319.71 and 44,500.60

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Solution

The fourth proportional to 78,491.98, 108,319.71 and 44,500.60 is: 61,411.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,491.98 : 108,319.71 = 44,500.60 : x
  2. Step 2: Convert to fraction form
    78,491.98/108,319.71 = 44,500.60/x
  3. Step 3: Cross multiply
    78,491.98x = 108,319.71 × 44,500.60
  4. Step 4: Simplify right side
    78,491.98x = 4,820,292,086.83
  5. Step 5: Solve for x
    x = 4,820,292,086.83/78,491.98
  6. Step 6: Final answer
    x = 61,411.27

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1.5x scale

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.