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Finding the Fourth Proportional to 464,398.53, 640,276.69 and 300,765.93

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Solution

The fourth proportional to 464,398.53, 640,276.69 and 300,765.93 is: 414,672.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,398.53 : 640,276.69 = 300,765.93 : x
  2. Step 2: Convert to fraction form
    464,398.53/640,276.69 = 300,765.93/x
  3. Step 3: Cross multiply
    464,398.53x = 640,276.69 × 300,765.93
  4. Step 4: Simplify right side
    464,398.53x = 192,573,414,125.17
  5. Step 5: Solve for x
    x = 192,573,414,125.17/464,398.53
  6. Step 6: Final answer
    x = 414,672.75

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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.