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Finding the Fourth Proportional to 64,729.74, 96,970.23 and 39,696.81

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Solution

The fourth proportional to 64,729.74, 96,970.23 and 39,696.81 is: 59,468.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,729.74 : 96,970.23 = 39,696.81 : x
  2. Step 2: Convert to fraction form
    64,729.74/96,970.23 = 39,696.81/x
  3. Step 3: Cross multiply
    64,729.74x = 96,970.23 × 39,696.81
  4. Step 4: Simplify right side
    64,729.74x = 3,849,408,795.97
  5. Step 5: Solve for x
    x = 3,849,408,795.97/64,729.74
  6. Step 6: Final answer
    x = 59,468.94

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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.