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Finding the Fourth Proportional to 64,991.70, 97,487.55 and 61,055.10

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Solution

The fourth proportional to 64,991.70, 97,487.55 and 61,055.10 is: 91,582.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,991.70 : 97,487.55 = 61,055.10 : x
  2. Step 2: Convert to fraction form
    64,991.70/97,487.55 = 61,055.10/x
  3. Step 3: Cross multiply
    64,991.70x = 97,487.55 × 61,055.10
  4. Step 4: Simplify right side
    64,991.70x = 5,952,112,114.01
  5. Step 5: Solve for x
    x = 5,952,112,114.01/64,991.70
  6. Step 6: Final answer
    x = 91,582.65

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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.