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Finding the Fourth Proportional to 10,358.63, 14,294.93 and 5,642.92

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Solution

The fourth proportional to 10,358.63, 14,294.93 and 5,642.92 is: 7,787.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,358.63 : 14,294.93 = 5,642.92 : x
  2. Step 2: Convert to fraction form
    10,358.63/14,294.93 = 5,642.92/x
  3. Step 3: Cross multiply
    10,358.63x = 14,294.93 × 5,642.92
  4. Step 4: Simplify right side
    10,358.63x = 80,665,087.38
  5. Step 5: Solve for x
    x = 80,665,087.38/10,358.63
  6. Step 6: Final answer
    x = 7,787.23

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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.