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Finding the Fourth Proportional to 115,906.90, 173,885.55 and 66,010.90

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Solution

The fourth proportional to 115,906.90, 173,885.55 and 66,010.90 is: 99,030.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,906.90 : 173,885.55 = 66,010.90 : x
  2. Step 2: Convert to fraction form
    115,906.90/173,885.55 = 66,010.90/x
  3. Step 3: Cross multiply
    115,906.90x = 173,885.55 × 66,010.90
  4. Step 4: Simplify right side
    115,906.90x = 11,478,341,652.50
  5. Step 5: Solve for x
    x = 11,478,341,652.50/115,906.90
  6. Step 6: Final answer
    x = 99,030.70

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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.