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Finding the Fourth Proportional to 66,426.40, 99,649.20 and 22,055.20

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Solution

The fourth proportional to 66,426.40, 99,649.20 and 22,055.20 is: 33,085.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,426.40 : 99,649.20 = 22,055.20 : x
  2. Step 2: Convert to fraction form
    66,426.40/99,649.20 = 22,055.20/x
  3. Step 3: Cross multiply
    66,426.40x = 99,649.20 × 22,055.20
  4. Step 4: Simplify right side
    66,426.40x = 2,197,783,035.84
  5. Step 5: Solve for x
    x = 2,197,783,035.84/66,426.40
  6. Step 6: Final answer
    x = 33,085.99

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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.