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Finding the Fourth Proportional to 86,712.95, 129,990.54 and 33,370.91

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Solution

The fourth proportional to 86,712.95, 129,990.54 and 33,370.91 is: 50,026.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,712.95 : 129,990.54 = 33,370.91 : x
  2. Step 2: Convert to fraction form
    86,712.95/129,990.54 = 33,370.91/x
  3. Step 3: Cross multiply
    86,712.95x = 129,990.54 × 33,370.91
  4. Step 4: Simplify right side
    86,712.95x = 4,337,901,961.24
  5. Step 5: Solve for x
    x = 4,337,901,961.24/86,712.95
  6. Step 6: Final answer
    x = 50,026.00

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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.