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Finding the Fourth Proportional to 109,246.80, 163,875.60 and 56,758.80

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Solution

The fourth proportional to 109,246.80, 163,875.60 and 56,758.80 is: 85,141.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,246.80 : 163,875.60 = 56,758.80 : x
  2. Step 2: Convert to fraction form
    109,246.80/163,875.60 = 56,758.80/x
  3. Step 3: Cross multiply
    109,246.80x = 163,875.60 × 56,758.80
  4. Step 4: Simplify right side
    109,246.80x = 9,301,382,405.28
  5. Step 5: Solve for x
    x = 9,301,382,405.28/109,246.80
  6. Step 6: Final answer
    x = 85,141.01

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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.