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Finding the Fourth Proportional to 117,777.80, 177,012.30 and 102,571.40

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Solution

The fourth proportional to 117,777.80, 177,012.30 and 102,571.40 is: 154,158.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,777.80 : 177,012.30 = 102,571.40 : x
  2. Step 2: Convert to fraction form
    117,777.80/177,012.30 = 102,571.40/x
  3. Step 3: Cross multiply
    117,777.80x = 177,012.30 × 102,571.40
  4. Step 4: Simplify right side
    117,777.80x = 18,156,399,428.22
  5. Step 5: Solve for x
    x = 18,156,399,428.22/117,777.80
  6. Step 6: Final answer
    x = 154,158.08

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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.