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Finding the Fourth Proportional to 99,968.80, 149,953.20 and 26,096.80

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Solution

The fourth proportional to 99,968.80, 149,953.20 and 26,096.80 is: 39,145.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,968.80 : 149,953.20 = 26,096.80 : x
  2. Step 2: Convert to fraction form
    99,968.80/149,953.20 = 26,096.80/x
  3. Step 3: Cross multiply
    99,968.80x = 149,953.20 × 26,096.80
  4. Step 4: Simplify right side
    99,968.80x = 3,913,298,669.76
  5. Step 5: Solve for x
    x = 3,913,298,669.76/99,968.80
  6. Step 6: Final answer
    x = 39,145.20

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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.