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Finding the Fourth Proportional to 78,328.48, 108,086.16 and 44,793.76

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Solution

The fourth proportional to 78,328.48, 108,086.16 and 44,793.76 is: 61,811.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,328.48 : 108,086.16 = 44,793.76 : x
  2. Step 2: Convert to fraction form
    78,328.48/108,086.16 = 44,793.76/x
  3. Step 3: Cross multiply
    78,328.48x = 108,086.16 × 44,793.76
  4. Step 4: Simplify right side
    78,328.48x = 4,841,585,510.36
  5. Step 5: Solve for x
    x = 4,841,585,510.36/78,328.48
  6. Step 6: Final answer
    x = 61,811.30

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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.