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Finding the Fourth Proportional to 7,068.50, 9,755.73 and 4,086.06

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Solution

The fourth proportional to 7,068.50, 9,755.73 and 4,086.06 is: 5,639.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,068.50 : 9,755.73 = 4,086.06 : x
  2. Step 2: Convert to fraction form
    7,068.50/9,755.73 = 4,086.06/x
  3. Step 3: Cross multiply
    7,068.50x = 9,755.73 × 4,086.06
  4. Step 4: Simplify right side
    7,068.50x = 39,862,428.91
  5. Step 5: Solve for x
    x = 39,862,428.91/7,068.50
  6. Step 6: Final answer
    x = 5,639.45

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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.