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Finding the Fourth Proportional to 21,916.19, 32,853.48 and 7,114.77

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Solution

The fourth proportional to 21,916.19, 32,853.48 and 7,114.77 is: 10,665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,916.19 : 32,853.48 = 7,114.77 : x
  2. Step 2: Convert to fraction form
    21,916.19/32,853.48 = 7,114.77/x
  3. Step 3: Cross multiply
    21,916.19x = 32,853.48 × 7,114.77
  4. Step 4: Simplify right side
    21,916.19x = 233,744,953.90
  5. Step 5: Solve for x
    x = 233,744,953.90/21,916.19
  6. Step 6: Final answer
    x = 10,665.40

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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.