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Finding the Fourth Proportional to 191,279.70, 286,919.55 and 102,706.20

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Solution

The fourth proportional to 191,279.70, 286,919.55 and 102,706.20 is: 154,059.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,279.70 : 286,919.55 = 102,706.20 : x
  2. Step 2: Convert to fraction form
    191,279.70/286,919.55 = 102,706.20/x
  3. Step 3: Cross multiply
    191,279.70x = 286,919.55 × 102,706.20
  4. Step 4: Simplify right side
    191,279.70x = 29,468,416,686.21
  5. Step 5: Solve for x
    x = 29,468,416,686.21/191,279.70
  6. Step 6: Final answer
    x = 154,059.30

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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.