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Finding the Fourth Proportional to 1,169,320, 1,613,661.60 and 632,776

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Solution

The fourth proportional to 1,169,320, 1,613,661.60 and 632,776 is: 873,230.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169,320 : 1,613,661.60 = 632,776 : x
  2. Step 2: Convert to fraction form
    1,169,320/1,613,661.60 = 632,776/x
  3. Step 3: Cross multiply
    1,169,320x = 1,613,661.60 × 632,776
  4. Step 4: Simplify right side
    1,169,320x = 1,021,086,332,601.60
  5. Step 5: Solve for x
    x = 1,021,086,332,601.60/1,169,320
  6. Step 6: Final answer
    x = 873,230.88

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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.