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Finding the Fourth Proportional to 405,215.67, 607,340.39 and 188,784.08

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Solution

The fourth proportional to 405,215.67, 607,340.39 and 188,784.08 is: 282,951.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,215.67 : 607,340.39 = 188,784.08 : x
  2. Step 2: Convert to fraction form
    405,215.67/607,340.39 = 188,784.08/x
  3. Step 3: Cross multiply
    405,215.67x = 607,340.39 × 188,784.08
  4. Step 4: Simplify right side
    405,215.67x = 114,656,196,772.99
  5. Step 5: Solve for x
    x = 114,656,196,772.99/405,215.67
  6. Step 6: Final answer
    x = 282,951.04

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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.