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Finding the Fourth Proportional to 28,980.56, 43,479.16 and 9,262.16

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Solution

The fourth proportional to 28,980.56, 43,479.16 and 9,262.16 is: 13,895.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,980.56 : 43,479.16 = 9,262.16 : x
  2. Step 2: Convert to fraction form
    28,980.56/43,479.16 = 9,262.16/x
  3. Step 3: Cross multiply
    28,980.56x = 43,479.16 × 9,262.16
  4. Step 4: Simplify right side
    28,980.56x = 402,710,936.59
  5. Step 5: Solve for x
    x = 402,710,936.59/28,980.56
  6. Step 6: Final answer
    x = 13,895.90

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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.