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Finding the Fourth Proportional to 86,187.60, 129,300.84 and 35,585.28

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Solution

The fourth proportional to 86,187.60, 129,300.84 and 35,585.28 is: 53,385.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,187.60 : 129,300.84 = 35,585.28 : x
  2. Step 2: Convert to fraction form
    86,187.60/129,300.84 = 35,585.28/x
  3. Step 3: Cross multiply
    86,187.60x = 129,300.84 × 35,585.28
  4. Step 4: Simplify right side
    86,187.60x = 4,601,206,595.64
  5. Step 5: Solve for x
    x = 4,601,206,595.64/86,187.60
  6. Step 6: Final answer
    x = 53,385.95

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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.