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Finding the Fourth Proportional to 8,775,648.20, 13,163,472.30 and 7,655,904.20

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Solution

The fourth proportional to 8,775,648.20, 13,163,472.30 and 7,655,904.20 is: 11,483,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775,648.20 : 13,163,472.30 = 7,655,904.20 : x
  2. Step 2: Convert to fraction form
    8,775,648.20/13,163,472.30 = 7,655,904.20/x
  3. Step 3: Cross multiply
    8,775,648.20x = 13,163,472.30 × 7,655,904.20
  4. Step 4: Simplify right side
    8,775,648.20x = 100,778,282,868,153.67
  5. Step 5: Solve for x
    x = 100,778,282,868,153.67/8,775,648.20
  6. Step 6: Final answer
    x = 11,483,856.30

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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.