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Finding the Fourth Proportional to 307,491.48, 424,338.96 and 171,522.12

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Solution

The fourth proportional to 307,491.48, 424,338.96 and 171,522.12 is: 236,700.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,491.48 : 424,338.96 = 171,522.12 : x
  2. Step 2: Convert to fraction form
    307,491.48/424,338.96 = 171,522.12/x
  3. Step 3: Cross multiply
    307,491.48x = 424,338.96 × 171,522.12
  4. Step 4: Simplify right side
    307,491.48x = 72,783,518,017.80
  5. Step 5: Solve for x
    x = 72,783,518,017.80/307,491.48
  6. Step 6: Final answer
    x = 236,700.93

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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.