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Finding the Fourth Proportional to 8,360,019.90, 11,689,856.10 and 8,360,019.90

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Solution

The fourth proportional to 8,360,019.90, 11,689,856.10 and 8,360,019.90 is: 11,689,856.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,360,019.90 : 11,689,856.10 = 8,360,019.90 : x
  2. Step 2: Convert to fraction form
    8,360,019.90/11,689,856.10 = 8,360,019.90/x
  3. Step 3: Cross multiply
    8,360,019.90x = 11,689,856.10 × 8,360,019.90
  4. Step 4: Simplify right side
    8,360,019.90x = 97,727,429,624,136.39
  5. Step 5: Solve for x
    x = 97,727,429,624,136.39/8,360,019.90
  6. Step 6: Final answer
    x = 11,689,856.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.