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Finding the Fourth Proportional to 8,991,215.10, 13,486,822.65 and 8,991,215.10

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Solution

The fourth proportional to 8,991,215.10, 13,486,822.65 and 8,991,215.10 is: 13,486,822.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991,215.10 : 13,486,822.65 = 8,991,215.10 : x
  2. Step 2: Convert to fraction form
    8,991,215.10/13,486,822.65 = 8,991,215.10/x
  3. Step 3: Cross multiply
    8,991,215.10x = 13,486,822.65 × 8,991,215.10
  4. Step 4: Simplify right side
    8,991,215.10x = 121,262,923,461,702.02
  5. Step 5: Solve for x
    x = 121,262,923,461,702.02/8,991,215.10
  6. Step 6: Final answer
    x = 13,486,822.65

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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.