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Finding the Fourth Proportional to 5,193.40, 7,790.10 and 1,683.40

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Solution

The fourth proportional to 5,193.40, 7,790.10 and 1,683.40 is: 2,525.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,193.40 : 7,790.10 = 1,683.40 : x
  2. Step 2: Convert to fraction form
    5,193.40/7,790.10 = 1,683.40/x
  3. Step 3: Cross multiply
    5,193.40x = 7,790.10 × 1,683.40
  4. Step 4: Simplify right side
    5,193.40x = 13,113,854.34
  5. Step 5: Solve for x
    x = 13,113,854.34/5,193.40
  6. Step 6: Final answer
    x = 2,525.10

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Half scale
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Double scale
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Similar ratio
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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.