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Finding the Fourth Proportional to 9,356.43, 12,916.65 and 7,227.19

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Solution

The fourth proportional to 9,356.43, 12,916.65 and 7,227.19 is: 9,977.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,356.43 : 12,916.65 = 7,227.19 : x
  2. Step 2: Convert to fraction form
    9,356.43/12,916.65 = 7,227.19/x
  3. Step 3: Cross multiply
    9,356.43x = 12,916.65 × 7,227.19
  4. Step 4: Simplify right side
    9,356.43x = 93,351,083.71
  5. Step 5: Solve for x
    x = 93,351,083.71/9,356.43
  6. Step 6: Final answer
    x = 9,977.21

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Half scale
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Double scale
Find fourth proportional to 9,357.43, 12,918.03 and 7,228.19
Similar ratio
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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.