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Finding the Fourth Proportional to 13,206,573.20, 18,501,799.60 and 13,206,573.20

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Solution

The fourth proportional to 13,206,573.20, 18,501,799.60 and 13,206,573.20 is: 18,501,799.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206,573.20 : 18,501,799.60 = 13,206,573.20 : x
  2. Step 2: Convert to fraction form
    13,206,573.20/18,501,799.60 = 13,206,573.20/x
  3. Step 3: Cross multiply
    13,206,573.20x = 18,501,799.60 × 13,206,573.20
  4. Step 4: Simplify right side
    13,206,573.20x = 244,345,370,749,130.72
  5. Step 5: Solve for x
    x = 244,345,370,749,130.72/13,206,573.20
  6. Step 6: Final answer
    x = 18,501,799.60

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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.