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Finding the Fourth Proportional to 719,360.43, 992,717.44 and 397,070.61

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Solution

The fourth proportional to 719,360.43, 992,717.44 and 397,070.61 is: 547,957.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,360.43 : 992,717.44 = 397,070.61 : x
  2. Step 2: Convert to fraction form
    719,360.43/992,717.44 = 397,070.61/x
  3. Step 3: Cross multiply
    719,360.43x = 992,717.44 × 397,070.61
  4. Step 4: Simplify right side
    719,360.43x = 394,178,919,458.44
  5. Step 5: Solve for x
    x = 394,178,919,458.44/719,360.43
  6. Step 6: Final answer
    x = 547,957.47

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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.