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Finding the Fourth Proportional to 11,970.12, 17,950.86 and 5,045.16

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Solution

The fourth proportional to 11,970.12, 17,950.86 and 5,045.16 is: 7,565.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,970.12 : 17,950.86 = 5,045.16 : x
  2. Step 2: Convert to fraction form
    11,970.12/17,950.86 = 5,045.16/x
  3. Step 3: Cross multiply
    11,970.12x = 17,950.86 × 5,045.16
  4. Step 4: Simplify right side
    11,970.12x = 90,564,960.84
  5. Step 5: Solve for x
    x = 90,564,960.84/11,970.12
  6. Step 6: Final answer
    x = 7,565.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.