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Finding the Fourth Proportional to 65,953.81, 98,931.80 and 18,570.04

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Solution

The fourth proportional to 65,953.81, 98,931.80 and 18,570.04 is: 27,855.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,953.81 : 98,931.80 = 18,570.04 : x
  2. Step 2: Convert to fraction form
    65,953.81/98,931.80 = 18,570.04/x
  3. Step 3: Cross multiply
    65,953.81x = 98,931.80 × 18,570.04
  4. Step 4: Simplify right side
    65,953.81x = 1,837,167,508.39
  5. Step 5: Solve for x
    x = 1,837,167,508.39/65,953.81
  6. Step 6: Final answer
    x = 27,855.37

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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.