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Finding the Fourth Proportional to 64,752.81, 97,143.11 and 36,686.31

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Solution

The fourth proportional to 64,752.81, 97,143.11 and 36,686.31 is: 55,037.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,752.81 : 97,143.11 = 36,686.31 : x
  2. Step 2: Convert to fraction form
    64,752.81/97,143.11 = 36,686.31/x
  3. Step 3: Cross multiply
    64,752.81x = 97,143.11 × 36,686.31
  4. Step 4: Simplify right side
    64,752.81x = 3,563,822,247.82
  5. Step 5: Solve for x
    x = 3,563,822,247.82/64,752.81
  6. Step 6: Final answer
    x = 55,037.34

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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.