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Finding the Fourth Proportional to 86,516.20, 129,774.30 and 33,927.40

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Solution

The fourth proportional to 86,516.20, 129,774.30 and 33,927.40 is: 50,891.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,516.20 : 129,774.30 = 33,927.40 : x
  2. Step 2: Convert to fraction form
    86,516.20/129,774.30 = 33,927.40/x
  3. Step 3: Cross multiply
    86,516.20x = 129,774.30 × 33,927.40
  4. Step 4: Simplify right side
    86,516.20x = 4,402,904,585.82
  5. Step 5: Solve for x
    x = 4,402,904,585.82/86,516.20
  6. Step 6: Final answer
    x = 50,891.10

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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.