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Finding the Fourth Proportional to 289,179.53, 399,212.58 and 181,808.76

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Solution

The fourth proportional to 289,179.53, 399,212.58 and 181,808.76 is: 250,987.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,179.53 : 399,212.58 = 181,808.76 : x
  2. Step 2: Convert to fraction form
    289,179.53/399,212.58 = 181,808.76/x
  3. Step 3: Cross multiply
    289,179.53x = 399,212.58 × 181,808.76
  4. Step 4: Simplify right side
    289,179.53x = 72,580,344,146.20
  5. Step 5: Solve for x
    x = 72,580,344,146.20/289,179.53
  6. Step 6: Final answer
    x = 250,987.14

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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.