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Finding the Fourth Proportional to 57,696,576.80, 86,544,865.20 and 19,359,341.60

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Solution

The fourth proportional to 57,696,576.80, 86,544,865.20 and 19,359,341.60 is: 29,039,012.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,696,576.80 : 86,544,865.20 = 19,359,341.60 : x
  2. Step 2: Convert to fraction form
    57,696,576.80/86,544,865.20 = 19,359,341.60/x
  3. Step 3: Cross multiply
    57,696,576.80x = 86,544,865.20 × 19,359,341.60
  4. Step 4: Simplify right side
    57,696,576.80x = 1,675,451,609,132,752.50
  5. Step 5: Solve for x
    x = 1,675,451,609,132,752.50/57,696,576.80
  6. Step 6: Final answer
    x = 29,039,012.40

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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.