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Finding the Fourth Proportional to 357,436.35, 535,337.95 and 170,579.07

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Solution

The fourth proportional to 357,436.35, 535,337.95 and 170,579.07 is: 255,478.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,436.35 : 535,337.95 = 170,579.07 : x
  2. Step 2: Convert to fraction form
    357,436.35/535,337.95 = 170,579.07/x
  3. Step 3: Cross multiply
    357,436.35x = 535,337.95 × 170,579.07
  4. Step 4: Simplify right side
    357,436.35x = 91,317,449,646.71
  5. Step 5: Solve for x
    x = 91,317,449,646.71/357,436.35
  6. Step 6: Final answer
    x = 255,478.91

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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.