Home / 352,428.60-528,638.30-86,191.42

Finding the Fourth Proportional to 352,428.60, 528,638.30 and 86,191.42

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Solution

The fourth proportional to 352,428.60, 528,638.30 and 86,191.42 is: 129,286.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,428.60 : 528,638.30 = 86,191.42 : x
  2. Step 2: Convert to fraction form
    352,428.60/528,638.30 = 86,191.42/x
  3. Step 3: Cross multiply
    352,428.60x = 528,638.30 × 86,191.42
  4. Step 4: Simplify right side
    352,428.60x = 45,564,085,743.39
  5. Step 5: Solve for x
    x = 45,564,085,743.39/352,428.60
  6. Step 6: Final answer
    x = 129,286.01

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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.