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Finding the Fourth Proportional to 418,225.71, 626,985.90 and 181,390.01

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Solution

The fourth proportional to 418,225.71, 626,985.90 and 181,390.01 is: 271,932.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,225.71 : 626,985.90 = 181,390.01 : x
  2. Step 2: Convert to fraction form
    418,225.71/626,985.90 = 181,390.01/x
  3. Step 3: Cross multiply
    418,225.71x = 626,985.90 × 181,390.01
  4. Step 4: Simplify right side
    418,225.71x = 113,728,975,535.93
  5. Step 5: Solve for x
    x = 113,728,975,535.93/418,225.71
  6. Step 6: Final answer
    x = 271,932.05

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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.