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Finding the Fourth Proportional to 31,192.49, 46,788.84 and 7,818.93

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Solution

The fourth proportional to 31,192.49, 46,788.84 and 7,818.93 is: 11,728.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,192.49 : 46,788.84 = 7,818.93 : x
  2. Step 2: Convert to fraction form
    31,192.49/46,788.84 = 7,818.93/x
  3. Step 3: Cross multiply
    31,192.49x = 46,788.84 × 7,818.93
  4. Step 4: Simplify right side
    31,192.49x = 365,838,664.74
  5. Step 5: Solve for x
    x = 365,838,664.74/31,192.49
  6. Step 6: Final answer
    x = 11,728.42

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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.