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Finding the Fourth Proportional to 673,278.89, 929,263.15 and 411,678.92

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Solution

The fourth proportional to 673,278.89, 929,263.15 and 411,678.92 is: 568,201.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,278.89 : 929,263.15 = 411,678.92 : x
  2. Step 2: Convert to fraction form
    673,278.89/929,263.15 = 411,678.92/x
  3. Step 3: Cross multiply
    673,278.89x = 929,263.15 × 411,678.92
  4. Step 4: Simplify right side
    673,278.89x = 382,558,049,340.82
  5. Step 5: Solve for x
    x = 382,558,049,340.82/673,278.89
  6. Step 6: Final answer
    x = 568,201.46

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Double scale
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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.