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Finding the Fourth Proportional to 99,620.78, 149,430.90 and 33,065.92

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Solution

The fourth proportional to 99,620.78, 149,430.90 and 33,065.92 is: 49,598.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,620.78 : 149,430.90 = 33,065.92 : x
  2. Step 2: Convert to fraction form
    99,620.78/149,430.90 = 33,065.92/x
  3. Step 3: Cross multiply
    99,620.78x = 149,430.90 × 33,065.92
  4. Step 4: Simplify right side
    99,620.78x = 4,941,069,437.77
  5. Step 5: Solve for x
    x = 4,941,069,437.77/99,620.78
  6. Step 6: Final answer
    x = 49,598.78

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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.