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Finding the Fourth Proportional to 418,986.11, 578,213.87 and 237,705.68

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Solution

The fourth proportional to 418,986.11, 578,213.87 and 237,705.68 is: 328,041.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,986.11 : 578,213.87 = 237,705.68 : x
  2. Step 2: Convert to fraction form
    418,986.11/578,213.87 = 237,705.68/x
  3. Step 3: Cross multiply
    418,986.11x = 578,213.87 × 237,705.68
  4. Step 4: Simplify right side
    418,986.11x = 137,444,717,074.18
  5. Step 5: Solve for x
    x = 137,444,717,074.18/418,986.11
  6. Step 6: Final answer
    x = 328,041.23

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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.