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Finding the Fourth Proportional to 83,950.81, 115,816.76 and 55,607.29

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Solution

The fourth proportional to 83,950.81, 115,816.76 and 55,607.29 is: 76,714.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,950.81 : 115,816.76 = 55,607.29 : x
  2. Step 2: Convert to fraction form
    83,950.81/115,816.76 = 55,607.29/x
  3. Step 3: Cross multiply
    83,950.81x = 115,816.76 × 55,607.29
  4. Step 4: Simplify right side
    83,950.81x = 6,440,256,160.18
  5. Step 5: Solve for x
    x = 6,440,256,160.18/83,950.81
  6. Step 6: Final answer
    x = 76,714.64

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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.