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Finding the Fourth Proportional to 76,443,911.80, 107,323,807.40 and 76,443,911.80

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Solution

The fourth proportional to 76,443,911.80, 107,323,807.40 and 76,443,911.80 is: 107,323,807.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,443,911.80 : 107,323,807.40 = 76,443,911.80 : x
  2. Step 2: Convert to fraction form
    76,443,911.80/107,323,807.40 = 76,443,911.80/x
  3. Step 3: Cross multiply
    76,443,911.80x = 107,323,807.40 × 76,443,911.80
  4. Step 4: Simplify right side
    76,443,911.80x = 8,204,251,666,925,787
  5. Step 5: Solve for x
    x = 8,204,251,666,925,787/76,443,911.80
  6. Step 6: Final answer
    x = 107,323,807.40

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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.