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Finding the Fourth Proportional to 5,696,839.64, 7,861,638.12 and 3,118,522.16

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Solution

The fourth proportional to 5,696,839.64, 7,861,638.12 and 3,118,522.16 is: 4,303,560.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,696,839.64 : 7,861,638.12 = 3,118,522.16 : x
  2. Step 2: Convert to fraction form
    5,696,839.64/7,861,638.12 = 3,118,522.16/x
  3. Step 3: Cross multiply
    5,696,839.64x = 7,861,638.12 × 3,118,522.16
  4. Step 4: Simplify right side
    5,696,839.64x = 24,516,692,691,120.74
  5. Step 5: Solve for x
    x = 24,516,692,691,120.74/5,696,839.64
  6. Step 6: Final answer
    x = 4,303,560.26

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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.