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Finding the Fourth Proportional to 14,405.60, 19,879.08 and 8,032.88

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Solution

The fourth proportional to 14,405.60, 19,879.08 and 8,032.88 is: 11,085.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,405.60 : 19,879.08 = 8,032.88 : x
  2. Step 2: Convert to fraction form
    14,405.60/19,879.08 = 8,032.88/x
  3. Step 3: Cross multiply
    14,405.60x = 19,879.08 × 8,032.88
  4. Step 4: Simplify right side
    14,405.60x = 159,686,264.15
  5. Step 5: Solve for x
    x = 159,686,264.15/14,405.60
  6. Step 6: Final answer
    x = 11,085.01

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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.