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Finding the Fourth Proportional to 141,999.98, 195,959.95 and 78,337.77

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Solution

The fourth proportional to 141,999.98, 195,959.95 and 78,337.77 is: 108,106.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,999.98 : 195,959.95 = 78,337.77 : x
  2. Step 2: Convert to fraction form
    141,999.98/195,959.95 = 78,337.77/x
  3. Step 3: Cross multiply
    141,999.98x = 195,959.95 × 78,337.77
  4. Step 4: Simplify right side
    141,999.98x = 15,351,065,492.31
  5. Step 5: Solve for x
    x = 15,351,065,492.31/141,999.98
  6. Step 6: Final answer
    x = 108,106.11

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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.