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Finding the Fourth Proportional to 99,064.80, 148,888.80 and 86,234.40

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Solution

The fourth proportional to 99,064.80, 148,888.80 and 86,234.40 is: 129,605.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,064.80 : 148,888.80 = 86,234.40 : x
  2. Step 2: Convert to fraction form
    99,064.80/148,888.80 = 86,234.40/x
  3. Step 3: Cross multiply
    99,064.80x = 148,888.80 × 86,234.40
  4. Step 4: Simplify right side
    99,064.80x = 12,839,336,334.72
  5. Step 5: Solve for x
    x = 12,839,336,334.72/99,064.80
  6. Step 6: Final answer
    x = 129,605.43

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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.