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Finding the Fourth Proportional to 887,776, 1,225,161.12 and 485,393.92

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Solution

The fourth proportional to 887,776, 1,225,161.12 and 485,393.92 is: 669,860.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,776 : 1,225,161.12 = 485,393.92 : x
  2. Step 2: Convert to fraction form
    887,776/1,225,161.12 = 485,393.92/x
  3. Step 3: Cross multiply
    887,776x = 1,225,161.12 × 485,393.92
  4. Step 4: Simplify right side
    887,776x = 594,685,758,668.39
  5. Step 5: Solve for x
    x = 594,685,758,668.39/887,776
  6. Step 6: Final answer
    x = 669,860.14

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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.