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Finding the Fourth Proportional to 19,503.50, 26,921.70 and 11,552.54

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Solution

The fourth proportional to 19,503.50, 26,921.70 and 11,552.54 is: 15,946.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,503.50 : 26,921.70 = 11,552.54 : x
  2. Step 2: Convert to fraction form
    19,503.50/26,921.70 = 11,552.54/x
  3. Step 3: Cross multiply
    19,503.50x = 26,921.70 × 11,552.54
  4. Step 4: Simplify right side
    19,503.50x = 311,013,881.51
  5. Step 5: Solve for x
    x = 311,013,881.51/19,503.50
  6. Step 6: Final answer
    x = 15,946.57

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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.