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Finding the Fourth Proportional to 19,742.70, 29,618.19 and 5,702.70

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Solution

The fourth proportional to 19,742.70, 29,618.19 and 5,702.70 is: 8,555.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,742.70 : 29,618.19 = 5,702.70 : x
  2. Step 2: Convert to fraction form
    19,742.70/29,618.19 = 5,702.70/x
  3. Step 3: Cross multiply
    19,742.70x = 29,618.19 × 5,702.70
  4. Step 4: Simplify right side
    19,742.70x = 168,903,652.11
  5. Step 5: Solve for x
    x = 168,903,652.11/19,742.70
  6. Step 6: Final answer
    x = 8,555.25

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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.