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Finding the Fourth Proportional to 83,055.20, 124,582.80 and 76,056.80

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Solution

The fourth proportional to 83,055.20, 124,582.80 and 76,056.80 is: 114,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,055.20 : 124,582.80 = 76,056.80 : x
  2. Step 2: Convert to fraction form
    83,055.20/124,582.80 = 76,056.80/x
  3. Step 3: Cross multiply
    83,055.20x = 124,582.80 × 76,056.80
  4. Step 4: Simplify right side
    83,055.20x = 9,475,369,103.04
  5. Step 5: Solve for x
    x = 9,475,369,103.04/83,055.20
  6. Step 6: Final answer
    x = 114,085.20

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1.5x scale

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.