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Finding the Fourth Proportional to 4,669,907.74, 7,005,071.45 and 1,431,208.15

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Solution

The fourth proportional to 4,669,907.74, 7,005,071.45 and 1,431,208.15 is: 2,146,876.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,669,907.74 : 7,005,071.45 = 1,431,208.15 : x
  2. Step 2: Convert to fraction form
    4,669,907.74/7,005,071.45 = 1,431,208.15/x
  3. Step 3: Cross multiply
    4,669,907.74x = 7,005,071.45 × 1,431,208.15
  4. Step 4: Simplify right side
    4,669,907.74x = 10,025,715,350,572.32
  5. Step 5: Solve for x
    x = 10,025,715,350,572.32/4,669,907.74
  6. Step 6: Final answer
    x = 2,146,876.54

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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.