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Finding the Fourth Proportional to 65,662.91, 98,403.65 and 56,876.03

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Solution

The fourth proportional to 65,662.91, 98,403.65 and 56,876.03 is: 85,235.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,662.91 : 98,403.65 = 56,876.03 : x
  2. Step 2: Convert to fraction form
    65,662.91/98,403.65 = 56,876.03/x
  3. Step 3: Cross multiply
    65,662.91x = 98,403.65 × 56,876.03
  4. Step 4: Simplify right side
    65,662.91x = 5,596,808,665.13
  5. Step 5: Solve for x
    x = 5,596,808,665.13/65,662.91
  6. Step 6: Final answer
    x = 85,235.46

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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.