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Finding the Fourth Proportional to 7,209,882.78, 9,948,957.75 and 4,308,696.06

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Solution

The fourth proportional to 7,209,882.78, 9,948,957.75 and 4,308,696.06 is: 5,945,593.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209,882.78 : 9,948,957.75 = 4,308,696.06 : x
  2. Step 2: Convert to fraction form
    7,209,882.78/9,948,957.75 = 4,308,696.06/x
  3. Step 3: Cross multiply
    7,209,882.78x = 9,948,957.75 × 4,308,696.06
  4. Step 4: Simplify right side
    7,209,882.78x = 42,867,035,058,531.46
  5. Step 5: Solve for x
    x = 42,867,035,058,531.46/7,209,882.78
  6. Step 6: Final answer
    x = 5,945,593.90

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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.