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Finding the Fourth Proportional to 86,366.80, 129,587.82 and 30,247.22

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Solution

The fourth proportional to 86,366.80, 129,587.82 and 30,247.22 is: 45,384.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,366.80 : 129,587.82 = 30,247.22 : x
  2. Step 2: Convert to fraction form
    86,366.80/129,587.82 = 30,247.22/x
  3. Step 3: Cross multiply
    86,366.80x = 129,587.82 × 30,247.22
  4. Step 4: Simplify right side
    86,366.80x = 3,919,671,300.86
  5. Step 5: Solve for x
    x = 3,919,671,300.86/86,366.80
  6. Step 6: Final answer
    x = 45,384.01

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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.