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Finding the Fourth Proportional to 89,200.80, 133,606.80 and 77,536.80

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Solution

The fourth proportional to 89,200.80, 133,606.80 and 77,536.80 is: 116,136.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,200.80 : 133,606.80 = 77,536.80 : x
  2. Step 2: Convert to fraction form
    89,200.80/133,606.80 = 77,536.80/x
  3. Step 3: Cross multiply
    89,200.80x = 133,606.80 × 77,536.80
  4. Step 4: Simplify right side
    89,200.80x = 10,359,443,730.24
  5. Step 5: Solve for x
    x = 10,359,443,730.24/89,200.80
  6. Step 6: Final answer
    x = 116,136.22

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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.