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Finding the Fourth Proportional to 85,681.82, 128,519.04 and 23,352.32

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Solution

The fourth proportional to 85,681.82, 128,519.04 and 23,352.32 is: 35,027.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,681.82 : 128,519.04 = 23,352.32 : x
  2. Step 2: Convert to fraction form
    85,681.82/128,519.04 = 23,352.32/x
  3. Step 3: Cross multiply
    85,681.82x = 128,519.04 × 23,352.32
  4. Step 4: Simplify right side
    85,681.82x = 3,001,217,748.17
  5. Step 5: Solve for x
    x = 3,001,217,748.17/85,681.82
  6. Step 6: Final answer
    x = 35,027.47

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1.5x scale

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.