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Finding the Fourth Proportional to 40,952.64, 61,430.16 and 11,372.64

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Solution

The fourth proportional to 40,952.64, 61,430.16 and 11,372.64 is: 17,059.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,952.64 : 61,430.16 = 11,372.64 : x
  2. Step 2: Convert to fraction form
    40,952.64/61,430.16 = 11,372.64/x
  3. Step 3: Cross multiply
    40,952.64x = 61,430.16 × 11,372.64
  4. Step 4: Simplify right side
    40,952.64x = 698,623,094.82
  5. Step 5: Solve for x
    x = 698,623,094.82/40,952.64
  6. Step 6: Final answer
    x = 17,059.29

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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.