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Finding the Fourth Proportional to 383,316.25, 528,954.42 and 219,938.17

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Solution

The fourth proportional to 383,316.25, 528,954.42 and 219,938.17 is: 303,502.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,316.25 : 528,954.42 = 219,938.17 : x
  2. Step 2: Convert to fraction form
    383,316.25/528,954.42 = 219,938.17/x
  3. Step 3: Cross multiply
    383,316.25x = 528,954.42 × 219,938.17
  4. Step 4: Simplify right side
    383,316.25x = 116,337,267,148.21
  5. Step 5: Solve for x
    x = 116,337,267,148.21/383,316.25
  6. Step 6: Final answer
    x = 303,502.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.