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Finding the Fourth Proportional to 289,184.76, 399,074.88 and 161,860.32

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Solution

The fourth proportional to 289,184.76, 399,074.88 and 161,860.32 is: 223,367.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,184.76 : 399,074.88 = 161,860.32 : x
  2. Step 2: Convert to fraction form
    289,184.76/399,074.88 = 161,860.32/x
  3. Step 3: Cross multiply
    289,184.76x = 399,074.88 × 161,860.32
  4. Step 4: Simplify right side
    289,184.76x = 64,594,387,780.76
  5. Step 5: Solve for x
    x = 64,594,387,780.76/289,184.76
  6. Step 6: Final answer
    x = 223,367.19

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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.