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Finding the Fourth Proportional to 464,347.32, 640,527.81 and 291,992.52

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Solution

The fourth proportional to 464,347.32, 640,527.81 and 291,992.52 is: 402,778.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,347.32 : 640,527.81 = 291,992.52 : x
  2. Step 2: Convert to fraction form
    464,347.32/640,527.81 = 291,992.52/x
  3. Step 3: Cross multiply
    464,347.32x = 640,527.81 × 291,992.52
  4. Step 4: Simplify right side
    464,347.32x = 187,029,329,371.98
  5. Step 5: Solve for x
    x = 187,029,329,371.98/464,347.32
  6. Step 6: Final answer
    x = 402,778.96

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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.