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Finding the Fourth Proportional to 86,018.80, 129,006.60 and 30,601.84

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Solution

The fourth proportional to 86,018.80, 129,006.60 and 30,601.84 is: 45,895.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,018.80 : 129,006.60 = 30,601.84 : x
  2. Step 2: Convert to fraction form
    86,018.80/129,006.60 = 30,601.84/x
  3. Step 3: Cross multiply
    86,018.80x = 129,006.60 × 30,601.84
  4. Step 4: Simplify right side
    86,018.80x = 3,947,839,332.14
  5. Step 5: Solve for x
    x = 3,947,839,332.14/86,018.80
  6. Step 6: Final answer
    x = 45,895.08

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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.