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Finding the Fourth Proportional to 8,788,156.83, 13,177,429.70 and 6,978,148.70

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Solution

The fourth proportional to 8,788,156.83, 13,177,429.70 and 6,978,148.70 is: 10,463,407.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788,156.83 : 13,177,429.70 = 6,978,148.70 : x
  2. Step 2: Convert to fraction form
    8,788,156.83/13,177,429.70 = 6,978,148.70/x
  3. Step 3: Cross multiply
    8,788,156.83x = 13,177,429.70 × 6,978,148.70
  4. Step 4: Simplify right side
    8,788,156.83x = 91,954,063,829,618.50
  5. Step 5: Solve for x
    x = 91,954,063,829,618.50/8,788,156.83
  6. Step 6: Final answer
    x = 10,463,407.24

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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.