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Finding the Fourth Proportional to 69,352.40, 104,028.60 and 57,688.40

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Solution

The fourth proportional to 69,352.40, 104,028.60 and 57,688.40 is: 86,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,352.40 : 104,028.60 = 57,688.40 : x
  2. Step 2: Convert to fraction form
    69,352.40/104,028.60 = 57,688.40/x
  3. Step 3: Cross multiply
    69,352.40x = 104,028.60 × 57,688.40
  4. Step 4: Simplify right side
    69,352.40x = 6,001,243,488.24
  5. Step 5: Solve for x
    x = 6,001,243,488.24/69,352.40
  6. Step 6: Final answer
    x = 86,532.60

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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.