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Finding the Fourth Proportional to 78,035.85, 107,689.84 and 44,045.78

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Solution

The fourth proportional to 78,035.85, 107,689.84 and 44,045.78 is: 60,783.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,035.85 : 107,689.84 = 44,045.78 : x
  2. Step 2: Convert to fraction form
    78,035.85/107,689.84 = 44,045.78/x
  3. Step 3: Cross multiply
    78,035.85x = 107,689.84 × 44,045.78
  4. Step 4: Simplify right side
    78,035.85x = 4,743,282,352.31
  5. Step 5: Solve for x
    x = 4,743,282,352.31/78,035.85
  6. Step 6: Final answer
    x = 60,783.38

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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.