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Finding the Fourth Proportional to 1,411,743.72, 1,948,199.94 and 767,151.72

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Solution

The fourth proportional to 1,411,743.72, 1,948,199.94 and 767,151.72 is: 1,058,665.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411,743.72 : 1,948,199.94 = 767,151.72 : x
  2. Step 2: Convert to fraction form
    1,411,743.72/1,948,199.94 = 767,151.72/x
  3. Step 3: Cross multiply
    1,411,743.72x = 1,948,199.94 × 767,151.72
  4. Step 4: Simplify right side
    1,411,743.72x = 1,494,564,934,874.90
  5. Step 5: Solve for x
    x = 1,494,564,934,874.90/1,411,743.72
  6. Step 6: Final answer
    x = 1,058,665.90

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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.