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Finding the Fourth Proportional to 99,809.80, 149,714.70 and 93,904.90

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Solution

The fourth proportional to 99,809.80, 149,714.70 and 93,904.90 is: 140,857.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,809.80 : 149,714.70 = 93,904.90 : x
  2. Step 2: Convert to fraction form
    99,809.80/149,714.70 = 93,904.90/x
  3. Step 3: Cross multiply
    99,809.80x = 149,714.70 × 93,904.90
  4. Step 4: Simplify right side
    99,809.80x = 14,058,943,932.03
  5. Step 5: Solve for x
    x = 14,058,943,932.03/99,809.80
  6. Step 6: Final answer
    x = 140,857.35

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Double scale
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Similar ratio
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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.