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Finding the Fourth Proportional to 217,075.68, 325,644.10 and 67,328.15

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Solution

The fourth proportional to 217,075.68, 325,644.10 and 67,328.15 is: 101,001.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,075.68 : 325,644.10 = 67,328.15 : x
  2. Step 2: Convert to fraction form
    217,075.68/325,644.10 = 67,328.15/x
  3. Step 3: Cross multiply
    217,075.68x = 325,644.10 × 67,328.15
  4. Step 4: Simplify right side
    217,075.68x = 21,925,013,014.87
  5. Step 5: Solve for x
    x = 21,925,013,014.87/217,075.68
  6. Step 6: Final answer
    x = 101,001.70

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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.