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Finding the Fourth Proportional to 85,753.74, 128,677.08 and 35,838.23

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Solution

The fourth proportional to 85,753.74, 128,677.08 and 35,838.23 is: 53,776.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,753.74 : 128,677.08 = 35,838.23 : x
  2. Step 2: Convert to fraction form
    85,753.74/128,677.08 = 35,838.23/x
  3. Step 3: Cross multiply
    85,753.74x = 128,677.08 × 35,838.23
  4. Step 4: Simplify right side
    85,753.74x = 4,611,558,145.38
  5. Step 5: Solve for x
    x = 4,611,558,145.38/85,753.74
  6. Step 6: Final answer
    x = 53,776.76

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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.