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Finding the Fourth Proportional to 216,551.55, 324,761.70 and 64,758.69

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Solution

The fourth proportional to 216,551.55, 324,761.70 and 64,758.69 is: 97,118.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,551.55 : 324,761.70 = 64,758.69 : x
  2. Step 2: Convert to fraction form
    216,551.55/324,761.70 = 64,758.69/x
  3. Step 3: Cross multiply
    216,551.55x = 324,761.70 × 64,758.69
  4. Step 4: Simplify right side
    216,551.55x = 21,031,142,254.17
  5. Step 5: Solve for x
    x = 21,031,142,254.17/216,551.55
  6. Step 6: Final answer
    x = 97,118.41

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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.