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Finding the Fourth Proportional to 19,849,809.20, 29,774,713.80 and 19,010,001.20

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Solution

The fourth proportional to 19,849,809.20, 29,774,713.80 and 19,010,001.20 is: 28,515,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,849,809.20 : 29,774,713.80 = 19,010,001.20 : x
  2. Step 2: Convert to fraction form
    19,849,809.20/29,774,713.80 = 19,010,001.20/x
  3. Step 3: Cross multiply
    19,849,809.20x = 29,774,713.80 × 19,010,001.20
  4. Step 4: Simplify right side
    19,849,809.20x = 566,017,345,067,656.50
  5. Step 5: Solve for x
    x = 566,017,345,067,656.50/19,849,809.20
  6. Step 6: Final answer
    x = 28,515,001.80

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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.