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Finding the Fourth Proportional to 129,809.60, 193,775.40 and 114,063.20

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Solution

The fourth proportional to 129,809.60, 193,775.40 and 114,063.20 is: 170,269.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,809.60 : 193,775.40 = 114,063.20 : x
  2. Step 2: Convert to fraction form
    129,809.60/193,775.40 = 114,063.20/x
  3. Step 3: Cross multiply
    129,809.60x = 193,775.40 × 114,063.20
  4. Step 4: Simplify right side
    129,809.60x = 22,102,642,205.28
  5. Step 5: Solve for x
    x = 22,102,642,205.28/129,809.60
  6. Step 6: Final answer
    x = 170,269.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.