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Finding the Fourth Proportional to 109,503.99, 151,106.46 and 61,769.07

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Solution

The fourth proportional to 109,503.99, 151,106.46 and 61,769.07 is: 85,236.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,503.99 : 151,106.46 = 61,769.07 : x
  2. Step 2: Convert to fraction form
    109,503.99/151,106.46 = 61,769.07/x
  3. Step 3: Cross multiply
    109,503.99x = 151,106.46 × 61,769.07
  4. Step 4: Simplify right side
    109,503.99x = 9,333,705,505.19
  5. Step 5: Solve for x
    x = 9,333,705,505.19/109,503.99
  6. Step 6: Final answer
    x = 85,236.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.