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Finding the Fourth Proportional to 92,078.70, 127,066.50 and 56,268.60

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Solution

The fourth proportional to 92,078.70, 127,066.50 and 56,268.60 is: 77,649.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,078.70 : 127,066.50 = 56,268.60 : x
  2. Step 2: Convert to fraction form
    92,078.70/127,066.50 = 56,268.60/x
  3. Step 3: Cross multiply
    92,078.70x = 127,066.50 × 56,268.60
  4. Step 4: Simplify right side
    92,078.70x = 7,149,854,061.90
  5. Step 5: Solve for x
    x = 7,149,854,061.90/92,078.70
  6. Step 6: Final answer
    x = 77,649.38

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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.