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Finding the Fourth Proportional to 11,662,693.70, 17,494,040.55 and 7,421,663.30

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Solution

The fourth proportional to 11,662,693.70, 17,494,040.55 and 7,421,663.30 is: 11,132,494.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,662,693.70 : 17,494,040.55 = 7,421,663.30 : x
  2. Step 2: Convert to fraction form
    11,662,693.70/17,494,040.55 = 7,421,663.30/x
  3. Step 3: Cross multiply
    11,662,693.70x = 17,494,040.55 × 7,421,663.30
  4. Step 4: Simplify right side
    11,662,693.70x = 129,834,878,718,646.81
  5. Step 5: Solve for x
    x = 129,834,878,718,646.81/11,662,693.70
  6. Step 6: Final answer
    x = 11,132,494.95

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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.