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Finding the Fourth Proportional to 111,363.48, 153,594.90 and 68,945.40

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Solution

The fourth proportional to 111,363.48, 153,594.90 and 68,945.40 is: 95,090.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,363.48 : 153,594.90 = 68,945.40 : x
  2. Step 2: Convert to fraction form
    111,363.48/153,594.90 = 68,945.40/x
  3. Step 3: Cross multiply
    111,363.48x = 153,594.90 × 68,945.40
  4. Step 4: Simplify right side
    111,363.48x = 10,589,661,818.46
  5. Step 5: Solve for x
    x = 10,589,661,818.46/111,363.48
  6. Step 6: Final answer
    x = 95,090.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.