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Finding the Fourth Proportional to 276,043.10, 414,064.71 and 86,503.43

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Solution

The fourth proportional to 276,043.10, 414,064.71 and 86,503.43 is: 129,755.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,043.10 : 414,064.71 = 86,503.43 : x
  2. Step 2: Convert to fraction form
    276,043.10/414,064.71 = 86,503.43/x
  3. Step 3: Cross multiply
    276,043.10x = 414,064.71 × 86,503.43
  4. Step 4: Simplify right side
    276,043.10x = 35,818,017,656.96
  5. Step 5: Solve for x
    x = 35,818,017,656.96/276,043.10
  6. Step 6: Final answer
    x = 129,755.16

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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.