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Finding the Fourth Proportional to 141,894.77, 195,816.35 and 78,234.89

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Solution

The fourth proportional to 141,894.77, 195,816.35 and 78,234.89 is: 107,965.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,894.77 : 195,816.35 = 78,234.89 : x
  2. Step 2: Convert to fraction form
    141,894.77/195,816.35 = 78,234.89/x
  3. Step 3: Cross multiply
    141,894.77x = 195,816.35 × 78,234.89
  4. Step 4: Simplify right side
    141,894.77x = 15,319,670,211.28
  5. Step 5: Solve for x
    x = 15,319,670,211.28/141,894.77
  6. Step 6: Final answer
    x = 107,965.01

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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.