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Finding the Fourth Proportional to 64,762.69, 97,139.58 and 39,806.59

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Solution

The fourth proportional to 64,762.69, 97,139.58 and 39,806.59 is: 59,707.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,762.69 : 97,139.58 = 39,806.59 : x
  2. Step 2: Convert to fraction form
    64,762.69/97,139.58 = 39,806.59/x
  3. Step 3: Cross multiply
    64,762.69x = 97,139.58 × 39,806.59
  4. Step 4: Simplify right side
    64,762.69x = 3,866,795,234.80
  5. Step 5: Solve for x
    x = 3,866,795,234.80/64,762.69
  6. Step 6: Final answer
    x = 59,707.14

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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.