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Finding the Fourth Proportional to 312,551.84, 431,215.44 and 176,565.92

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Solution

The fourth proportional to 312,551.84, 431,215.44 and 176,565.92 is: 243,601.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,551.84 : 431,215.44 = 176,565.92 : x
  2. Step 2: Convert to fraction form
    312,551.84/431,215.44 = 176,565.92/x
  3. Step 3: Cross multiply
    312,551.84x = 431,215.44 × 176,565.92
  4. Step 4: Simplify right side
    312,551.84x = 76,137,950,881.80
  5. Step 5: Solve for x
    x = 76,137,950,881.80/312,551.84
  6. Step 6: Final answer
    x = 243,601.03

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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.