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Finding the Fourth Proportional to 18,759,879.20, 28,139,818.80 and 17,714,784.80

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Solution

The fourth proportional to 18,759,879.20, 28,139,818.80 and 17,714,784.80 is: 26,572,177.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759,879.20 : 28,139,818.80 = 17,714,784.80 : x
  2. Step 2: Convert to fraction form
    18,759,879.20/28,139,818.80 = 17,714,784.80/x
  3. Step 3: Cross multiply
    18,759,879.20x = 28,139,818.80 × 17,714,784.80
  4. Step 4: Simplify right side
    18,759,879.20x = 498,490,834,352,994.25
  5. Step 5: Solve for x
    x = 498,490,834,352,994.25/18,759,879.20
  6. Step 6: Final answer
    x = 26,572,177.20

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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.