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Finding the Fourth Proportional to 418,512.61, 576,571.12 and 290,966.77

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Solution

The fourth proportional to 418,512.61, 576,571.12 and 290,966.77 is: 400,855.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,512.61 : 576,571.12 = 290,966.77 : x
  2. Step 2: Convert to fraction form
    418,512.61/576,571.12 = 290,966.77/x
  3. Step 3: Cross multiply
    418,512.61x = 576,571.12 × 290,966.77
  4. Step 4: Simplify right side
    418,512.61x = 167,763,036,461.68
  5. Step 5: Solve for x
    x = 167,763,036,461.68/418,512.61
  6. Step 6: Final answer
    x = 400,855.39

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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.