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Finding the Fourth Proportional to 18,740.96, 28,114.48 and 7,055.04

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Solution

The fourth proportional to 18,740.96, 28,114.48 and 7,055.04 is: 10,583.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,740.96 : 28,114.48 = 7,055.04 : x
  2. Step 2: Convert to fraction form
    18,740.96/28,114.48 = 7,055.04/x
  3. Step 3: Cross multiply
    18,740.96x = 28,114.48 × 7,055.04
  4. Step 4: Simplify right side
    18,740.96x = 198,348,780.98
  5. Step 5: Solve for x
    x = 198,348,780.98/18,740.96
  6. Step 6: Final answer
    x = 10,583.70

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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.