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Finding the Fourth Proportional to 11,238,916.80, 16,808,608.80 and 9,447,326.40

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Solution

The fourth proportional to 11,238,916.80, 16,808,608.80 and 9,447,326.40 is: 14,129,156.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,238,916.80 : 16,808,608.80 = 9,447,326.40 : x
  2. Step 2: Convert to fraction form
    11,238,916.80/16,808,608.80 = 9,447,326.40/x
  3. Step 3: Cross multiply
    11,238,916.80x = 16,808,608.80 × 9,447,326.40
  4. Step 4: Simplify right side
    11,238,916.80x = 158,796,413,663,512.34
  5. Step 5: Solve for x
    x = 158,796,413,663,512.34/11,238,916.80
  6. Step 6: Final answer
    x = 14,129,156.44

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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.