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Finding the Fourth Proportional to 109,965.70, 164,916.15 and 43,383.70

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Solution

The fourth proportional to 109,965.70, 164,916.15 and 43,383.70 is: 65,062.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,965.70 : 164,916.15 = 43,383.70 : x
  2. Step 2: Convert to fraction form
    109,965.70/164,916.15 = 43,383.70/x
  3. Step 3: Cross multiply
    109,965.70x = 164,916.15 × 43,383.70
  4. Step 4: Simplify right side
    109,965.70x = 7,154,672,776.76
  5. Step 5: Solve for x
    x = 7,154,672,776.76/109,965.70
  6. Step 6: Final answer
    x = 65,062.77

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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.