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Finding the Fourth Proportional to 92,805.31, 128,071.32 and 50,363.84

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Solution

The fourth proportional to 92,805.31, 128,071.32 and 50,363.84 is: 69,502.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,805.31 : 128,071.32 = 50,363.84 : x
  2. Step 2: Convert to fraction form
    92,805.31/128,071.32 = 50,363.84/x
  3. Step 3: Cross multiply
    92,805.31x = 128,071.32 × 50,363.84
  4. Step 4: Simplify right side
    92,805.31x = 6,450,163,217.25
  5. Step 5: Solve for x
    x = 6,450,163,217.25/92,805.31
  6. Step 6: Final answer
    x = 69,502.10

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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.