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Finding the Fourth Proportional to 13,207,636.40, 18,452,899.60 and 13,207,636.40

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Solution

The fourth proportional to 13,207,636.40, 18,452,899.60 and 13,207,636.40 is: 18,452,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207,636.40 : 18,452,899.60 = 13,207,636.40 : x
  2. Step 2: Convert to fraction form
    13,207,636.40/18,452,899.60 = 13,207,636.40/x
  3. Step 3: Cross multiply
    13,207,636.40x = 18,452,899.60 × 13,207,636.40
  4. Step 4: Simplify right side
    13,207,636.40x = 243,719,188,442,505.47
  5. Step 5: Solve for x
    x = 243,719,188,442,505.47/13,207,636.40
  6. Step 6: Final answer
    x = 18,452,899.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.