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Finding the Fourth Proportional to 14,699.96, 20,285.96 and 7,985.58

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Solution

The fourth proportional to 14,699.96, 20,285.96 and 7,985.58 is: 11,020.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,699.96 : 20,285.96 = 7,985.58 : x
  2. Step 2: Convert to fraction form
    14,699.96/20,285.96 = 7,985.58/x
  3. Step 3: Cross multiply
    14,699.96x = 20,285.96 × 7,985.58
  4. Step 4: Simplify right side
    14,699.96x = 161,995,156.46
  5. Step 5: Solve for x
    x = 161,995,156.46/14,699.96
  6. Step 6: Final answer
    x = 11,020.11

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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.