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Finding the Fourth Proportional to 7,719.62, 10,653.62 and 4,362.74

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Solution

The fourth proportional to 7,719.62, 10,653.62 and 4,362.74 is: 6,020.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.62 : 10,653.62 = 4,362.74 : x
  2. Step 2: Convert to fraction form
    7,719.62/10,653.62 = 4,362.74/x
  3. Step 3: Cross multiply
    7,719.62x = 10,653.62 × 4,362.74
  4. Step 4: Simplify right side
    7,719.62x = 46,478,938.99
  5. Step 5: Solve for x
    x = 46,478,938.99/7,719.62
  6. Step 6: Final answer
    x = 6,020.89

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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.