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Finding the Fourth Proportional to 92,805.67, 128,070.68 and 50,363.90

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Solution

The fourth proportional to 92,805.67, 128,070.68 and 50,363.90 is: 69,501.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,805.67 : 128,070.68 = 50,363.90 : x
  2. Step 2: Convert to fraction form
    92,805.67/128,070.68 = 50,363.90/x
  3. Step 3: Cross multiply
    92,805.67x = 128,070.68 × 50,363.90
  4. Step 4: Simplify right side
    92,805.67x = 6,450,138,920.45
  5. Step 5: Solve for x
    x = 6,450,138,920.45/92,805.67
  6. Step 6: Final answer
    x = 69,501.56

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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.