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Finding the Fourth Proportional to 418,357.83, 576,671.29 and 383,605.05

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Solution

The fourth proportional to 418,357.83, 576,671.29 and 383,605.05 is: 528,767.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,357.83 : 576,671.29 = 383,605.05 : x
  2. Step 2: Convert to fraction form
    418,357.83/576,671.29 = 383,605.05/x
  3. Step 3: Cross multiply
    418,357.83x = 576,671.29 × 383,605.05
  4. Step 4: Simplify right side
    418,357.83x = 221,214,019,034.02
  5. Step 5: Solve for x
    x = 221,214,019,034.02/418,357.83
  6. Step 6: Final answer
    x = 528,767.49

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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.