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Finding the Fourth Proportional to 85,696.95, 128,524.46 and 35,777.46

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Solution

The fourth proportional to 85,696.95, 128,524.46 and 35,777.46 is: 53,657.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,696.95 : 128,524.46 = 35,777.46 : x
  2. Step 2: Convert to fraction form
    85,696.95/128,524.46 = 35,777.46/x
  3. Step 3: Cross multiply
    85,696.95x = 128,524.46 × 35,777.46
  4. Step 4: Simplify right side
    85,696.95x = 4,598,278,547.78
  5. Step 5: Solve for x
    x = 4,598,278,547.78/85,696.95
  6. Step 6: Final answer
    x = 53,657.44

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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.