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Finding the Fourth Proportional to 8,695,903.20, 13,018,971.60 and 8,695,903.20

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Solution

The fourth proportional to 8,695,903.20, 13,018,971.60 and 8,695,903.20 is: 13,018,971.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695,903.20 : 13,018,971.60 = 8,695,903.20 : x
  2. Step 2: Convert to fraction form
    8,695,903.20/13,018,971.60 = 8,695,903.20/x
  3. Step 3: Cross multiply
    8,695,903.20x = 13,018,971.60 × 8,695,903.20
  4. Step 4: Simplify right side
    8,695,903.20x = 113,211,716,797,149.11
  5. Step 5: Solve for x
    x = 113,211,716,797,149.11/8,695,903.20
  6. Step 6: Final answer
    x = 13,018,971.60

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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.