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Finding the Fourth Proportional to 917,079.44, 1,375,857 and 348,470.38

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Solution

The fourth proportional to 917,079.44, 1,375,857 and 348,470.38 is: 522,795.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,079.44 : 1,375,857 = 348,470.38 : x
  2. Step 2: Convert to fraction form
    917,079.44/1,375,857 = 348,470.38/x
  3. Step 3: Cross multiply
    917,079.44x = 1,375,857 × 348,470.38
  4. Step 4: Simplify right side
    917,079.44x = 479,445,411,615.66
  5. Step 5: Solve for x
    x = 479,445,411,615.66/917,079.44
  6. Step 6: Final answer
    x = 522,795.94

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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.