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Finding the Fourth Proportional to 692,078.76, 955,540.80 and 447,655.86

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Solution

The fourth proportional to 692,078.76, 955,540.80 and 447,655.86 is: 618,070.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,078.76 : 955,540.80 = 447,655.86 : x
  2. Step 2: Convert to fraction form
    692,078.76/955,540.80 = 447,655.86/x
  3. Step 3: Cross multiply
    692,078.76x = 955,540.80 × 447,655.86
  4. Step 4: Simplify right side
    692,078.76x = 427,753,438,589.09
  5. Step 5: Solve for x
    x = 427,753,438,589.09/692,078.76
  6. Step 6: Final answer
    x = 618,070.46

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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.