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Finding the Fourth Proportional to 99,809.37, 148,950.19 and 89,159.79

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Solution

The fourth proportional to 99,809.37, 148,950.19 and 89,159.79 is: 133,057.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,809.37 : 148,950.19 = 89,159.79 : x
  2. Step 2: Convert to fraction form
    99,809.37/148,950.19 = 89,159.79/x
  3. Step 3: Cross multiply
    99,809.37x = 148,950.19 × 89,159.79
  4. Step 4: Simplify right side
    99,809.37x = 13,280,367,660.86
  5. Step 5: Solve for x
    x = 13,280,367,660.86/99,809.37
  6. Step 6: Final answer
    x = 133,057.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.