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Finding the Fourth Proportional to 92,403.59, 127,401.36 and 77,112.20

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Solution

The fourth proportional to 92,403.59, 127,401.36 and 77,112.20 is: 106,318.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,403.59 : 127,401.36 = 77,112.20 : x
  2. Step 2: Convert to fraction form
    92,403.59/127,401.36 = 77,112.20/x
  3. Step 3: Cross multiply
    92,403.59x = 127,401.36 × 77,112.20
  4. Step 4: Simplify right side
    92,403.59x = 9,824,199,181.92
  5. Step 5: Solve for x
    x = 9,824,199,181.92/92,403.59
  6. Step 6: Final answer
    x = 106,318.38

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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.