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Finding the Fourth Proportional to 97,788.90, 146,464.65 and 80,292.90

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Solution

The fourth proportional to 97,788.90, 146,464.65 and 80,292.90 is: 120,259.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,788.90 : 146,464.65 = 80,292.90 : x
  2. Step 2: Convert to fraction form
    97,788.90/146,464.65 = 80,292.90/x
  3. Step 3: Cross multiply
    97,788.90x = 146,464.65 × 80,292.90
  4. Step 4: Simplify right side
    97,788.90x = 11,760,071,495.99
  5. Step 5: Solve for x
    x = 11,760,071,495.99/97,788.90
  6. Step 6: Final answer
    x = 120,259.78

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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.