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Finding the Fourth Proportional to 7,909,978.32, 10,896,246.90 and 6,744,631.86

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Solution

The fourth proportional to 7,909,978.32, 10,896,246.90 and 6,744,631.86 is: 9,290,945.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909,978.32 : 10,896,246.90 = 6,744,631.86 : x
  2. Step 2: Convert to fraction form
    7,909,978.32/10,896,246.90 = 6,744,631.86/x
  3. Step 3: Cross multiply
    7,909,978.32x = 10,896,246.90 × 6,744,631.86
  4. Step 4: Simplify right side
    7,909,978.32x = 73,491,173,996,166.23
  5. Step 5: Solve for x
    x = 73,491,173,996,166.23/7,909,978.32
  6. Step 6: Final answer
    x = 9,290,945.06

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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.