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Finding the Fourth Proportional to 64,968.57, 97,491.72 and 28,032.57

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Solution

The fourth proportional to 64,968.57, 97,491.72 and 28,032.57 is: 42,065.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,968.57 : 97,491.72 = 28,032.57 : x
  2. Step 2: Convert to fraction form
    64,968.57/97,491.72 = 28,032.57/x
  3. Step 3: Cross multiply
    64,968.57x = 97,491.72 × 28,032.57
  4. Step 4: Simplify right side
    64,968.57x = 2,732,943,465.32
  5. Step 5: Solve for x
    x = 2,732,943,465.32/64,968.57
  6. Step 6: Final answer
    x = 42,065.62

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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.