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Finding the Fourth Proportional to 65,386.92, 98,178.79 and 37,338.64

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Solution

The fourth proportional to 65,386.92, 98,178.79 and 37,338.64 is: 56,064.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,386.92 : 98,178.79 = 37,338.64 : x
  2. Step 2: Convert to fraction form
    65,386.92/98,178.79 = 37,338.64/x
  3. Step 3: Cross multiply
    65,386.92x = 98,178.79 × 37,338.64
  4. Step 4: Simplify right side
    65,386.92x = 3,665,862,495.45
  5. Step 5: Solve for x
    x = 3,665,862,495.45/65,386.92
  6. Step 6: Final answer
    x = 56,064.16

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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.