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Finding the Fourth Proportional to 756,798.90, 1,044,390.66 and 412,632

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Solution

The fourth proportional to 756,798.90, 1,044,390.66 and 412,632 is: 569,436.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,798.90 : 1,044,390.66 = 412,632 : x
  2. Step 2: Convert to fraction form
    756,798.90/1,044,390.66 = 412,632/x
  3. Step 3: Cross multiply
    756,798.90x = 1,044,390.66 × 412,632
  4. Step 4: Simplify right side
    756,798.90x = 430,949,006,817.12
  5. Step 5: Solve for x
    x = 430,949,006,817.12/756,798.90
  6. Step 6: Final answer
    x = 569,436.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.