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Finding the Fourth Proportional to 14,658,994.70, 20,231,840.98 and 8,134,719.90

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Solution

The fourth proportional to 14,658,994.70, 20,231,840.98 and 8,134,719.90 is: 11,227,261.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,658,994.70 : 20,231,840.98 = 8,134,719.90 : x
  2. Step 2: Convert to fraction form
    14,658,994.70/20,231,840.98 = 8,134,719.90/x
  3. Step 3: Cross multiply
    14,658,994.70x = 20,231,840.98 × 8,134,719.90
  4. Step 4: Simplify right side
    14,658,994.70x = 164,580,359,433,641.50
  5. Step 5: Solve for x
    x = 164,580,359,433,641.50/14,658,994.70
  6. Step 6: Final answer
    x = 11,227,261.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.