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Finding the Fourth Proportional to 618,773.69, 853,947.16 and 346,841.66

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Solution

The fourth proportional to 618,773.69, 853,947.16 and 346,841.66 is: 478,663.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,773.69 : 853,947.16 = 346,841.66 : x
  2. Step 2: Convert to fraction form
    618,773.69/853,947.16 = 346,841.66/x
  3. Step 3: Cross multiply
    618,773.69x = 853,947.16 × 346,841.66
  4. Step 4: Simplify right side
    618,773.69x = 296,184,451,794.45
  5. Step 5: Solve for x
    x = 296,184,451,794.45/618,773.69
  6. Step 6: Final answer
    x = 478,663.61

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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.