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Finding the Fourth Proportional to 418,701.60, 577,803.36 and 227,710.80

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Solution

The fourth proportional to 418,701.60, 577,803.36 and 227,710.80 is: 314,238.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,701.60 : 577,803.36 = 227,710.80 : x
  2. Step 2: Convert to fraction form
    418,701.60/577,803.36 = 227,710.80/x
  3. Step 3: Cross multiply
    418,701.60x = 577,803.36 × 227,710.80
  4. Step 4: Simplify right side
    418,701.60x = 131,572,065,348.29
  5. Step 5: Solve for x
    x = 131,572,065,348.29/418,701.60
  6. Step 6: Final answer
    x = 314,238.27

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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.