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Finding the Fourth Proportional to 4,993,402.06, 6,890,892.51 and 2,818,401.40

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Solution

The fourth proportional to 4,993,402.06, 6,890,892.51 and 2,818,401.40 is: 3,889,392.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,993,402.06 : 6,890,892.51 = 2,818,401.40 : x
  2. Step 2: Convert to fraction form
    4,993,402.06/6,890,892.51 = 2,818,401.40/x
  3. Step 3: Cross multiply
    4,993,402.06x = 6,890,892.51 × 2,818,401.40
  4. Step 4: Simplify right side
    4,993,402.06x = 19,421,301,097,433.51
  5. Step 5: Solve for x
    x = 19,421,301,097,433.51/4,993,402.06
  6. Step 6: Final answer
    x = 3,889,392.62

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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.