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Finding the Fourth Proportional to 3,119,643.90, 4,376,949.30 and 3,119,643.90

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Solution

The fourth proportional to 3,119,643.90, 4,376,949.30 and 3,119,643.90 is: 4,376,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119,643.90 : 4,376,949.30 = 3,119,643.90 : x
  2. Step 2: Convert to fraction form
    3,119,643.90/4,376,949.30 = 3,119,643.90/x
  3. Step 3: Cross multiply
    3,119,643.90x = 4,376,949.30 × 3,119,643.90
  4. Step 4: Simplify right side
    3,119,643.90x = 13,654,523,184,354.27
  5. Step 5: Solve for x
    x = 13,654,523,184,354.27/3,119,643.90
  6. Step 6: Final answer
    x = 4,376,949.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.