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Finding the Fourth Proportional to 101,241.78, 152,018.73 and 85,651.65

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Solution

The fourth proportional to 101,241.78, 152,018.73 and 85,651.65 is: 128,609.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,241.78 : 152,018.73 = 85,651.65 : x
  2. Step 2: Convert to fraction form
    101,241.78/152,018.73 = 85,651.65/x
  3. Step 3: Cross multiply
    101,241.78x = 152,018.73 × 85,651.65
  4. Step 4: Simplify right side
    101,241.78x = 13,020,655,055.40
  5. Step 5: Solve for x
    x = 13,020,655,055.40/101,241.78
  6. Step 6: Final answer
    x = 128,609.50

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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.