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Finding the Fourth Proportional to 148,906.70, 223,360.05 and 85,921.10

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Solution

The fourth proportional to 148,906.70, 223,360.05 and 85,921.10 is: 128,881.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,906.70 : 223,360.05 = 85,921.10 : x
  2. Step 2: Convert to fraction form
    148,906.70/223,360.05 = 85,921.10/x
  3. Step 3: Cross multiply
    148,906.70x = 223,360.05 × 85,921.10
  4. Step 4: Simplify right side
    148,906.70x = 19,191,341,192.06
  5. Step 5: Solve for x
    x = 19,191,341,192.06/148,906.70
  6. Step 6: Final answer
    x = 128,881.65

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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.