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Finding the Fourth Proportional to 75,861.72, 113,702.09 and 35,280.45

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Solution

The fourth proportional to 75,861.72, 113,702.09 and 35,280.45 is: 52,878.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,861.72 : 113,702.09 = 35,280.45 : x
  2. Step 2: Convert to fraction form
    75,861.72/113,702.09 = 35,280.45/x
  3. Step 3: Cross multiply
    75,861.72x = 113,702.09 × 35,280.45
  4. Step 4: Simplify right side
    75,861.72x = 4,011,460,724.74
  5. Step 5: Solve for x
    x = 4,011,460,724.74/75,861.72
  6. Step 6: Final answer
    x = 52,878.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.