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Finding the Fourth Proportional to 64,844.32, 97,261.44 and 20,472.40

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Solution

The fourth proportional to 64,844.32, 97,261.44 and 20,472.40 is: 30,707.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,844.32 : 97,261.44 = 20,472.40 : x
  2. Step 2: Convert to fraction form
    64,844.32/97,261.44 = 20,472.40/x
  3. Step 3: Cross multiply
    64,844.32x = 97,261.44 × 20,472.40
  4. Step 4: Simplify right side
    64,844.32x = 1,991,175,104.26
  5. Step 5: Solve for x
    x = 1,991,175,104.26/64,844.32
  6. Step 6: Final answer
    x = 30,707.01

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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.