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Finding the Fourth Proportional to 34,392.60, 51,564.60 and 15,681.60

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Solution

The fourth proportional to 34,392.60, 51,564.60 and 15,681.60 is: 23,511.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,392.60 : 51,564.60 = 15,681.60 : x
  2. Step 2: Convert to fraction form
    34,392.60/51,564.60 = 15,681.60/x
  3. Step 3: Cross multiply
    34,392.60x = 51,564.60 × 15,681.60
  4. Step 4: Simplify right side
    34,392.60x = 808,615,431.36
  5. Step 5: Solve for x
    x = 808,615,431.36/34,392.60
  6. Step 6: Final answer
    x = 23,511.32

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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.