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Finding the Fourth Proportional to 478,189.69, 715,512.87 and 351,923.24

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Solution

The fourth proportional to 478,189.69, 715,512.87 and 351,923.24 is: 526,581.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,189.69 : 715,512.87 = 351,923.24 : x
  2. Step 2: Convert to fraction form
    478,189.69/715,512.87 = 351,923.24/x
  3. Step 3: Cross multiply
    478,189.69x = 715,512.87 × 351,923.24
  4. Step 4: Simplify right side
    478,189.69x = 251,805,607,472.10
  5. Step 5: Solve for x
    x = 251,805,607,472.10/478,189.69
  6. Step 6: Final answer
    x = 526,581.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.