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Finding the Fourth Proportional to 18,953.48, 26,141.70 and 13,916.12

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Solution

The fourth proportional to 18,953.48, 26,141.70 and 13,916.12 is: 19,193.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.48 : 26,141.70 = 13,916.12 : x
  2. Step 2: Convert to fraction form
    18,953.48/26,141.70 = 13,916.12/x
  3. Step 3: Cross multiply
    18,953.48x = 26,141.70 × 13,916.12
  4. Step 4: Simplify right side
    18,953.48x = 363,791,034.20
  5. Step 5: Solve for x
    x = 363,791,034.20/18,953.48
  6. Step 6: Final answer
    x = 19,193.89

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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.