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Finding the Fourth Proportional to 7,319,030.40, 10,978,545.60 and 2,000,246.40

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Solution

The fourth proportional to 7,319,030.40, 10,978,545.60 and 2,000,246.40 is: 3,000,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,319,030.40 : 10,978,545.60 = 2,000,246.40 : x
  2. Step 2: Convert to fraction form
    7,319,030.40/10,978,545.60 = 2,000,246.40/x
  3. Step 3: Cross multiply
    7,319,030.40x = 10,978,545.60 × 2,000,246.40
  4. Step 4: Simplify right side
    7,319,030.40x = 21,959,796,313,635.84
  5. Step 5: Solve for x
    x = 21,959,796,313,635.84/7,319,030.40
  6. Step 6: Final answer
    x = 3,000,369.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.