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Finding the Fourth Proportional to 641,937.47, 885,867.34 and 347,585.80

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Solution

The fourth proportional to 641,937.47, 885,867.34 and 347,585.80 is: 479,664.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,937.47 : 885,867.34 = 347,585.80 : x
  2. Step 2: Convert to fraction form
    641,937.47/885,867.34 = 347,585.80/x
  3. Step 3: Cross multiply
    641,937.47x = 885,867.34 × 347,585.80
  4. Step 4: Simplify right side
    641,937.47x = 307,914,901,900.51
  5. Step 5: Solve for x
    x = 307,914,901,900.51/641,937.47
  6. Step 6: Final answer
    x = 479,664.95

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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.