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Finding the Fourth Proportional to 9,905.60, 14,870.55 and 9,832.70

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Solution

The fourth proportional to 9,905.60, 14,870.55 and 9,832.70 is: 14,761.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.60 : 14,870.55 = 9,832.70 : x
  2. Step 2: Convert to fraction form
    9,905.60/14,870.55 = 9,832.70/x
  3. Step 3: Cross multiply
    9,905.60x = 14,870.55 × 9,832.70
  4. Step 4: Simplify right side
    9,905.60x = 146,217,656.99
  5. Step 5: Solve for x
    x = 146,217,656.99/9,905.60
  6. Step 6: Final answer
    x = 14,761.11

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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.