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Finding the Fourth Proportional to 143,907.17, 215,933.65 and 97,061.63

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Solution

The fourth proportional to 143,907.17, 215,933.65 and 97,061.63 is: 145,641.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,907.17 : 215,933.65 = 97,061.63 : x
  2. Step 2: Convert to fraction form
    143,907.17/215,933.65 = 97,061.63/x
  3. Step 3: Cross multiply
    143,907.17x = 215,933.65 × 97,061.63
  4. Step 4: Simplify right side
    143,907.17x = 20,958,870,718.53
  5. Step 5: Solve for x
    x = 20,958,870,718.53/143,907.17
  6. Step 6: Final answer
    x = 145,641.61

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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.