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Finding the Fourth Proportional to 19,962,652.40, 29,887,991.40 and 19,402,780.40

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Solution

The fourth proportional to 19,962,652.40, 29,887,991.40 and 19,402,780.40 is: 29,049,753.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,962,652.40 : 29,887,991.40 = 19,402,780.40 : x
  2. Step 2: Convert to fraction form
    19,962,652.40/29,887,991.40 = 19,402,780.40/x
  3. Step 3: Cross multiply
    19,962,652.40x = 29,887,991.40 × 19,402,780.40
  4. Step 4: Simplify right side
    19,962,652.40x = 579,910,133,731,288.50
  5. Step 5: Solve for x
    x = 579,910,133,731,288.50/19,962,652.40
  6. Step 6: Final answer
    x = 29,049,753.62

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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.