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Finding the Fourth Proportional to 78,491.75, 108,328.43 and 44,957.75

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Solution

The fourth proportional to 78,491.75, 108,328.43 and 44,957.75 is: 62,047.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,491.75 : 108,328.43 = 44,957.75 : x
  2. Step 2: Convert to fraction form
    78,491.75/108,328.43 = 44,957.75/x
  3. Step 3: Cross multiply
    78,491.75x = 108,328.43 × 44,957.75
  4. Step 4: Simplify right side
    78,491.75x = 4,870,202,473.83
  5. Step 5: Solve for x
    x = 4,870,202,473.83/78,491.75
  6. Step 6: Final answer
    x = 62,047.32

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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.