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Finding the Fourth Proportional to 19,786,653.80, 29,679,980.70 and 14,684,820.20

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Solution

The fourth proportional to 19,786,653.80, 29,679,980.70 and 14,684,820.20 is: 22,027,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786,653.80 : 29,679,980.70 = 14,684,820.20 : x
  2. Step 2: Convert to fraction form
    19,786,653.80/29,679,980.70 = 14,684,820.20/x
  3. Step 3: Cross multiply
    19,786,653.80x = 29,679,980.70 × 14,684,820.20
  4. Step 4: Simplify right side
    19,786,653.80x = 435,845,180,118,970.12
  5. Step 5: Solve for x
    x = 435,845,180,118,970.12/19,786,653.80
  6. Step 6: Final answer
    x = 22,027,230.30

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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.