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Finding the Fourth Proportional to 111,079.54, 153,289.92 and 60,778.54

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Solution

The fourth proportional to 111,079.54, 153,289.92 and 60,778.54 is: 83,874.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,079.54 : 153,289.92 = 60,778.54 : x
  2. Step 2: Convert to fraction form
    111,079.54/153,289.92 = 60,778.54/x
  3. Step 3: Cross multiply
    111,079.54x = 153,289.92 × 60,778.54
  4. Step 4: Simplify right side
    111,079.54x = 9,316,737,534.32
  5. Step 5: Solve for x
    x = 9,316,737,534.32/111,079.54
  6. Step 6: Final answer
    x = 83,874.47

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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.