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Finding the Fourth Proportional to 7,169,848.59, 9,894,266.46 and 3,906,690.13

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Solution

The fourth proportional to 7,169,848.59, 9,894,266.46 and 3,906,690.13 is: 5,391,164.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,169,848.59 : 9,894,266.46 = 3,906,690.13 : x
  2. Step 2: Convert to fraction form
    7,169,848.59/9,894,266.46 = 3,906,690.13/x
  3. Step 3: Cross multiply
    7,169,848.59x = 9,894,266.46 × 3,906,690.13
  4. Step 4: Simplify right side
    7,169,848.59x = 38,653,833,122,872.04
  5. Step 5: Solve for x
    x = 38,653,833,122,872.04/7,169,848.59
  6. Step 6: Final answer
    x = 5,391,164.49

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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.