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Finding the Fourth Proportional to 605,297.76, 835,390.89 and 391,061.04

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Solution

The fourth proportional to 605,297.76, 835,390.89 and 391,061.04 is: 539,715.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,297.76 : 835,390.89 = 391,061.04 : x
  2. Step 2: Convert to fraction form
    605,297.76/835,390.89 = 391,061.04/x
  3. Step 3: Cross multiply
    605,297.76x = 835,390.89 × 391,061.04
  4. Step 4: Simplify right side
    605,297.76x = 326,688,830,249.93
  5. Step 5: Solve for x
    x = 326,688,830,249.93/605,297.76
  6. Step 6: Final answer
    x = 539,715.91

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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.