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Finding the Fourth Proportional to 70,387.96, 105,520.06 and 36,582.80

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Solution

The fourth proportional to 70,387.96, 105,520.06 and 36,582.80 is: 54,842.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,387.96 : 105,520.06 = 36,582.80 : x
  2. Step 2: Convert to fraction form
    70,387.96/105,520.06 = 36,582.80/x
  3. Step 3: Cross multiply
    70,387.96x = 105,520.06 × 36,582.80
  4. Step 4: Simplify right side
    70,387.96x = 3,860,219,250.97
  5. Step 5: Solve for x
    x = 3,860,219,250.97/70,387.96
  6. Step 6: Final answer
    x = 54,842.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.