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Finding the Fourth Proportional to 977,668.11, 1,347,769.08 and 686,392.92

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Solution

The fourth proportional to 977,668.11, 1,347,769.08 and 686,392.92 is: 946,230.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,668.11 : 1,347,769.08 = 686,392.92 : x
  2. Step 2: Convert to fraction form
    977,668.11/1,347,769.08 = 686,392.92/x
  3. Step 3: Cross multiply
    977,668.11x = 1,347,769.08 × 686,392.92
  4. Step 4: Simplify right side
    977,668.11x = 925,099,154,306.91
  5. Step 5: Solve for x
    x = 925,099,154,306.91/977,668.11
  6. Step 6: Final answer
    x = 946,230.26

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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.