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Finding the Fourth Proportional to 175,398.72, 263,075.28 and 70,218.72

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Solution

The fourth proportional to 175,398.72, 263,075.28 and 70,218.72 is: 105,318.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,398.72 : 263,075.28 = 70,218.72 : x
  2. Step 2: Convert to fraction form
    175,398.72/263,075.28 = 70,218.72/x
  3. Step 3: Cross multiply
    175,398.72x = 263,075.28 × 70,218.72
  4. Step 4: Simplify right side
    175,398.72x = 18,472,809,425.24
  5. Step 5: Solve for x
    x = 18,472,809,425.24/175,398.72
  6. Step 6: Final answer
    x = 105,318.95

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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.