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Finding the Fourth Proportional to 147,751.70, 221,315.55 and 97,855.70

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Solution

The fourth proportional to 147,751.70, 221,315.55 and 97,855.70 is: 146,576.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,751.70 : 221,315.55 = 97,855.70 : x
  2. Step 2: Convert to fraction form
    147,751.70/221,315.55 = 97,855.70/x
  3. Step 3: Cross multiply
    147,751.70x = 221,315.55 × 97,855.70
  4. Step 4: Simplify right side
    147,751.70x = 21,656,988,066.14
  5. Step 5: Solve for x
    x = 21,656,988,066.14/147,751.70
  6. Step 6: Final answer
    x = 146,576.91

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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.