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Finding the Fourth Proportional to 351,424.87, 527,132.59 and 85,187.65

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Solution

The fourth proportional to 351,424.87, 527,132.59 and 85,187.65 is: 127,780.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,424.87 : 527,132.59 = 85,187.65 : x
  2. Step 2: Convert to fraction form
    351,424.87/527,132.59 = 85,187.65/x
  3. Step 3: Cross multiply
    351,424.87x = 527,132.59 × 85,187.65
  4. Step 4: Simplify right side
    351,424.87x = 44,905,186,580.51
  5. Step 5: Solve for x
    x = 44,905,186,580.51/351,424.87
  6. Step 6: Final answer
    x = 127,780.33

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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.