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Finding the Fourth Proportional to 357,402.18, 535,286.79 and 170,544.90

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Solution

The fourth proportional to 357,402.18, 535,286.79 and 170,544.90 is: 255,427.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,402.18 : 535,286.79 = 170,544.90 : x
  2. Step 2: Convert to fraction form
    357,402.18/535,286.79 = 170,544.90/x
  3. Step 3: Cross multiply
    357,402.18x = 535,286.79 × 170,544.90
  4. Step 4: Simplify right side
    357,402.18x = 91,290,432,071.87
  5. Step 5: Solve for x
    x = 91,290,432,071.87/357,402.18
  6. Step 6: Final answer
    x = 255,427.74

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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.