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Finding the Fourth Proportional to 28,445.96, 42,668.94 and 7,671.08

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Solution

The fourth proportional to 28,445.96, 42,668.94 and 7,671.08 is: 11,506.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.96 : 42,668.94 = 7,671.08 : x
  2. Step 2: Convert to fraction form
    28,445.96/42,668.94 = 7,671.08/x
  3. Step 3: Cross multiply
    28,445.96x = 42,668.94 × 7,671.08
  4. Step 4: Simplify right side
    28,445.96x = 327,316,852.26
  5. Step 5: Solve for x
    x = 327,316,852.26/28,445.96
  6. Step 6: Final answer
    x = 11,506.62

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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.