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Finding the Fourth Proportional to 86,541.40, 129,812.10 and 36,604.90

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Solution

The fourth proportional to 86,541.40, 129,812.10 and 36,604.90 is: 54,907.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,541.40 : 129,812.10 = 36,604.90 : x
  2. Step 2: Convert to fraction form
    86,541.40/129,812.10 = 36,604.90/x
  3. Step 3: Cross multiply
    86,541.40x = 129,812.10 × 36,604.90
  4. Step 4: Simplify right side
    86,541.40x = 4,751,758,939.29
  5. Step 5: Solve for x
    x = 4,751,758,939.29/86,541.40
  6. Step 6: Final answer
    x = 54,907.35

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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.