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Finding the Fourth Proportional to 12,596,532.80, 18,881,896.80 and 6,196,942.40

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Solution

The fourth proportional to 12,596,532.80, 18,881,896.80 and 6,196,942.40 is: 9,289,066.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,596,532.80 : 18,881,896.80 = 6,196,942.40 : x
  2. Step 2: Convert to fraction form
    12,596,532.80/18,881,896.80 = 6,196,942.40/x
  3. Step 3: Cross multiply
    12,596,532.80x = 18,881,896.80 × 6,196,942.40
  4. Step 4: Simplify right side
    12,596,532.80x = 117,010,026,872,344.33
  5. Step 5: Solve for x
    x = 117,010,026,872,344.33/12,596,532.80
  6. Step 6: Final answer
    x = 9,289,066.18

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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.