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Finding the Fourth Proportional to 632,205.66, 872,511.44 and 387,352.92

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Solution

The fourth proportional to 632,205.66, 872,511.44 and 387,352.92 is: 534,588.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,205.66 : 872,511.44 = 387,352.92 : x
  2. Step 2: Convert to fraction form
    632,205.66/872,511.44 = 387,352.92/x
  3. Step 3: Cross multiply
    632,205.66x = 872,511.44 × 387,352.92
  4. Step 4: Simplify right side
    632,205.66x = 337,969,852,080.64
  5. Step 5: Solve for x
    x = 337,969,852,080.64/632,205.66
  6. Step 6: Final answer
    x = 534,588.46

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Double scale
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Similar ratio
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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.