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Finding the Fourth Proportional to 418,161.40, 577,061.76 and 227,173.12

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Solution

The fourth proportional to 418,161.40, 577,061.76 and 227,173.12 is: 313,498.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,161.40 : 577,061.76 = 227,173.12 : x
  2. Step 2: Convert to fraction form
    418,161.40/577,061.76 = 227,173.12/x
  3. Step 3: Cross multiply
    418,161.40x = 577,061.76 × 227,173.12
  4. Step 4: Simplify right side
    418,161.40x = 131,092,920,451.89
  5. Step 5: Solve for x
    x = 131,092,920,451.89/418,161.40
  6. Step 6: Final answer
    x = 313,498.38

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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.