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Finding the Fourth Proportional to 4,812,648.78, 7,218,895.68 and 1,169,407.48

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Solution

The fourth proportional to 4,812,648.78, 7,218,895.68 and 1,169,407.48 is: 1,754,092.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812,648.78 : 7,218,895.68 = 1,169,407.48 : x
  2. Step 2: Convert to fraction form
    4,812,648.78/7,218,895.68 = 1,169,407.48/x
  3. Step 3: Cross multiply
    4,812,648.78x = 7,218,895.68 × 1,169,407.48
  4. Step 4: Simplify right side
    4,812,648.78x = 8,441,830,605,531.69
  5. Step 5: Solve for x
    x = 8,441,830,605,531.69/4,812,648.78
  6. Step 6: Final answer
    x = 1,754,092.39

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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.