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Finding the Fourth Proportional to 101,928.80, 152,893.20 and 66,499.40

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Solution

The fourth proportional to 101,928.80, 152,893.20 and 66,499.40 is: 99,749.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,928.80 : 152,893.20 = 66,499.40 : x
  2. Step 2: Convert to fraction form
    101,928.80/152,893.20 = 66,499.40/x
  3. Step 3: Cross multiply
    101,928.80x = 152,893.20 × 66,499.40
  4. Step 4: Simplify right side
    101,928.80x = 10,167,306,064.08
  5. Step 5: Solve for x
    x = 10,167,306,064.08/101,928.80
  6. Step 6: Final answer
    x = 99,749.10

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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.