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Finding the Fourth Proportional to 7,062.77, 9,746.61 and 3,918.95

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Solution

The fourth proportional to 7,062.77, 9,746.61 and 3,918.95 is: 5,408.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,062.77 : 9,746.61 = 3,918.95 : x
  2. Step 2: Convert to fraction form
    7,062.77/9,746.61 = 3,918.95/x
  3. Step 3: Cross multiply
    7,062.77x = 9,746.61 × 3,918.95
  4. Step 4: Simplify right side
    7,062.77x = 38,196,477.26
  5. Step 5: Solve for x
    x = 38,196,477.26/7,062.77
  6. Step 6: Final answer
    x = 5,408.15

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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.