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Finding the Fourth Proportional to 92,774.85, 128,020.68 and 52,491.66

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Solution

The fourth proportional to 92,774.85, 128,020.68 and 52,491.66 is: 72,433.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,774.85 : 128,020.68 = 52,491.66 : x
  2. Step 2: Convert to fraction form
    92,774.85/128,020.68 = 52,491.66/x
  3. Step 3: Cross multiply
    92,774.85x = 128,020.68 × 52,491.66
  4. Step 4: Simplify right side
    92,774.85x = 6,720,018,007.53
  5. Step 5: Solve for x
    x = 6,720,018,007.53/92,774.85
  6. Step 6: Final answer
    x = 72,433.62

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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.