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Finding the Fourth Proportional to 368,991.65, 553,626.90 and 144,512.51

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Solution

The fourth proportional to 368,991.65, 553,626.90 and 144,512.51 is: 216,823.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,991.65 : 553,626.90 = 144,512.51 : x
  2. Step 2: Convert to fraction form
    368,991.65/553,626.90 = 144,512.51/x
  3. Step 3: Cross multiply
    368,991.65x = 553,626.90 × 144,512.51
  4. Step 4: Simplify right side
    368,991.65x = 80,006,010,154.38
  5. Step 5: Solve for x
    x = 80,006,010,154.38/368,991.65
  6. Step 6: Final answer
    x = 216,823.36

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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.