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Finding the Fourth Proportional to 9,360.72, 14,045.72 and 5,200.72

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Solution

The fourth proportional to 9,360.72, 14,045.72 and 5,200.72 is: 7,803.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360.72 : 14,045.72 = 5,200.72 : x
  2. Step 2: Convert to fraction form
    9,360.72/14,045.72 = 5,200.72/x
  3. Step 3: Cross multiply
    9,360.72x = 14,045.72 × 5,200.72
  4. Step 4: Simplify right side
    9,360.72x = 73,047,856.92
  5. Step 5: Solve for x
    x = 73,047,856.92/9,360.72
  6. Step 6: Final answer
    x = 7,803.66

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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.