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Finding the Fourth Proportional to 13,808.58, 20,710.71 and 4,574.58

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Solution

The fourth proportional to 13,808.58, 20,710.71 and 4,574.58 is: 6,861.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.58 : 20,710.71 = 4,574.58 : x
  2. Step 2: Convert to fraction form
    13,808.58/20,710.71 = 4,574.58/x
  3. Step 3: Cross multiply
    13,808.58x = 20,710.71 × 4,574.58
  4. Step 4: Simplify right side
    13,808.58x = 94,742,799.75
  5. Step 5: Solve for x
    x = 94,742,799.75/13,808.58
  6. Step 6: Final answer
    x = 6,861.15

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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.