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Finding the Fourth Proportional to 617,368.76, 930,680.30 and 576,218.96

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Solution

The fourth proportional to 617,368.76, 930,680.30 and 576,218.96 is: 868,647.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,368.76 : 930,680.30 = 576,218.96 : x
  2. Step 2: Convert to fraction form
    617,368.76/930,680.30 = 576,218.96/x
  3. Step 3: Cross multiply
    617,368.76x = 930,680.30 × 576,218.96
  4. Step 4: Simplify right side
    617,368.76x = 536,275,634,558.49
  5. Step 5: Solve for x
    x = 536,275,634,558.49/617,368.76
  6. Step 6: Final answer
    x = 868,647.18

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.