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Finding the Fourth Proportional to 113,110.80, 169,666.20 and 68,824.40

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Solution

The fourth proportional to 113,110.80, 169,666.20 and 68,824.40 is: 103,236.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,110.80 : 169,666.20 = 68,824.40 : x
  2. Step 2: Convert to fraction form
    113,110.80/169,666.20 = 68,824.40/x
  3. Step 3: Cross multiply
    113,110.80x = 169,666.20 × 68,824.40
  4. Step 4: Simplify right side
    113,110.80x = 11,677,174,415.28
  5. Step 5: Solve for x
    x = 11,677,174,415.28/113,110.80
  6. Step 6: Final answer
    x = 103,236.60

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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.