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Finding the Fourth Proportional to 56,862.96, 85,368.35 and 43,724.56

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Solution

The fourth proportional to 56,862.96, 85,368.35 and 43,724.56 is: 65,643.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,862.96 : 85,368.35 = 43,724.56 : x
  2. Step 2: Convert to fraction form
    56,862.96/85,368.35 = 43,724.56/x
  3. Step 3: Cross multiply
    56,862.96x = 85,368.35 × 43,724.56
  4. Step 4: Simplify right side
    56,862.96x = 3,732,693,060.18
  5. Step 5: Solve for x
    x = 3,732,693,060.18/56,862.96
  6. Step 6: Final answer
    x = 65,643.67

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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.