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Finding the Fourth Proportional to 10,916.70, 16,368.45 and 4,335.30

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Solution

The fourth proportional to 10,916.70, 16,368.45 and 4,335.30 is: 6,500.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,916.70 : 16,368.45 = 4,335.30 : x
  2. Step 2: Convert to fraction form
    10,916.70/16,368.45 = 4,335.30/x
  3. Step 3: Cross multiply
    10,916.70x = 16,368.45 × 4,335.30
  4. Step 4: Simplify right side
    10,916.70x = 70,962,141.29
  5. Step 5: Solve for x
    x = 70,962,141.29/10,916.70
  6. Step 6: Final answer
    x = 6,500.33

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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.