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Finding the Fourth Proportional to 129,116.99, 193,686.65 and 35,622.74

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Solution

The fourth proportional to 129,116.99, 193,686.65 and 35,622.74 is: 53,437.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,116.99 : 193,686.65 = 35,622.74 : x
  2. Step 2: Convert to fraction form
    129,116.99/193,686.65 = 35,622.74/x
  3. Step 3: Cross multiply
    129,116.99x = 193,686.65 × 35,622.74
  4. Step 4: Simplify right side
    129,116.99x = 6,899,648,027.87
  5. Step 5: Solve for x
    x = 6,899,648,027.87/129,116.99
  6. Step 6: Final answer
    x = 53,437.18

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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.