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Finding the Fourth Proportional to 111,154.86, 153,393.75 and 60,853.86

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Solution

The fourth proportional to 111,154.86, 153,393.75 and 60,853.86 is: 83,978.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,154.86 : 153,393.75 = 60,853.86 : x
  2. Step 2: Convert to fraction form
    111,154.86/153,393.75 = 60,853.86/x
  3. Step 3: Cross multiply
    111,154.86x = 153,393.75 × 60,853.86
  4. Step 4: Simplify right side
    111,154.86x = 9,334,601,787.38
  5. Step 5: Solve for x
    x = 9,334,601,787.38/111,154.86
  6. Step 6: Final answer
    x = 83,978.35

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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.