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Finding the Fourth Proportional to 10,647.40, 14,693.94 and 5,931.64

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Solution

The fourth proportional to 10,647.40, 14,693.94 and 5,931.64 is: 8,185.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,647.40 : 14,693.94 = 5,931.64 : x
  2. Step 2: Convert to fraction form
    10,647.40/14,693.94 = 5,931.64/x
  3. Step 3: Cross multiply
    10,647.40x = 14,693.94 × 5,931.64
  4. Step 4: Simplify right side
    10,647.40x = 87,159,162.26
  5. Step 5: Solve for x
    x = 87,159,162.26/10,647.40
  6. Step 6: Final answer
    x = 8,185.96

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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.