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Finding the Fourth Proportional to 7,955,215.20, 10,978,193.52 and 4,333,543.20

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Solution

The fourth proportional to 7,955,215.20, 10,978,193.52 and 4,333,543.20 is: 5,980,287.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955,215.20 : 10,978,193.52 = 4,333,543.20 : x
  2. Step 2: Convert to fraction form
    7,955,215.20/10,978,193.52 = 4,333,543.20/x
  3. Step 3: Cross multiply
    7,955,215.20x = 10,978,193.52 × 4,333,543.20
  4. Step 4: Simplify right side
    7,955,215.20x = 47,574,475,876,880.06
  5. Step 5: Solve for x
    x = 47,574,475,876,880.06/7,955,215.20
  6. Step 6: Final answer
    x = 5,980,287.73

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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.