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Finding the Fourth Proportional to 77,812.92, 116,755.83 and 38,348.51

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Solution

The fourth proportional to 77,812.92, 116,755.83 and 38,348.51 is: 57,540.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,812.92 : 116,755.83 = 38,348.51 : x
  2. Step 2: Convert to fraction form
    77,812.92/116,755.83 = 38,348.51/x
  3. Step 3: Cross multiply
    77,812.92x = 116,755.83 × 38,348.51
  4. Step 4: Simplify right side
    77,812.92x = 4,477,411,530.53
  5. Step 5: Solve for x
    x = 4,477,411,530.53/77,812.92
  6. Step 6: Final answer
    x = 57,540.72

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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.