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Finding the Fourth Proportional to 7,068.79, 9,754.20 and 4,085.58

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Solution

The fourth proportional to 7,068.79, 9,754.20 and 4,085.58 is: 5,637.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,068.79 : 9,754.20 = 4,085.58 : x
  2. Step 2: Convert to fraction form
    7,068.79/9,754.20 = 4,085.58/x
  3. Step 3: Cross multiply
    7,068.79x = 9,754.20 × 4,085.58
  4. Step 4: Simplify right side
    7,068.79x = 39,851,601.01
  5. Step 5: Solve for x
    x = 39,851,601.01/7,068.79
  6. Step 6: Final answer
    x = 5,637.68

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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.