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Finding the Fourth Proportional to 64,858.50, 97,287.78 and 15,610.50

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Solution

The fourth proportional to 64,858.50, 97,287.78 and 15,610.50 is: 23,415.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,858.50 : 97,287.78 = 15,610.50 : x
  2. Step 2: Convert to fraction form
    64,858.50/97,287.78 = 15,610.50/x
  3. Step 3: Cross multiply
    64,858.50x = 97,287.78 × 15,610.50
  4. Step 4: Simplify right side
    64,858.50x = 1,518,710,889.69
  5. Step 5: Solve for x
    x = 1,518,710,889.69/64,858.50
  6. Step 6: Final answer
    x = 23,415.76

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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.