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Finding the Fourth Proportional to 307,776.92, 424,744.98 and 171,818.42

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Solution

The fourth proportional to 307,776.92, 424,744.98 and 171,818.42 is: 237,116.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,776.92 : 424,744.98 = 171,818.42 : x
  2. Step 2: Convert to fraction form
    307,776.92/424,744.98 = 171,818.42/x
  3. Step 3: Cross multiply
    307,776.92x = 424,744.98 × 171,818.42
  4. Step 4: Simplify right side
    307,776.92x = 72,979,011,366.53
  5. Step 5: Solve for x
    x = 72,979,011,366.53/307,776.92
  6. Step 6: Final answer
    x = 237,116.58

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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.