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Finding the Fourth Proportional to 13,873,215.60, 20,809,823.40 and 3,775,820.40

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Solution

The fourth proportional to 13,873,215.60, 20,809,823.40 and 3,775,820.40 is: 5,663,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,873,215.60 : 20,809,823.40 = 3,775,820.40 : x
  2. Step 2: Convert to fraction form
    13,873,215.60/20,809,823.40 = 3,775,820.40/x
  3. Step 3: Cross multiply
    13,873,215.60x = 20,809,823.40 × 3,775,820.40
  4. Step 4: Simplify right side
    13,873,215.60x = 78,574,155,714,117.36
  5. Step 5: Solve for x
    x = 78,574,155,714,117.36/13,873,215.60
  6. Step 6: Final answer
    x = 5,663,730.60

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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.