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Finding the Fourth Proportional to 12,186,662.80, 16,807,788.52 and 10,713,421.34

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Solution

The fourth proportional to 12,186,662.80, 16,807,788.52 and 10,713,421.34 is: 14,775,900.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186,662.80 : 16,807,788.52 = 10,713,421.34 : x
  2. Step 2: Convert to fraction form
    12,186,662.80/16,807,788.52 = 10,713,421.34/x
  3. Step 3: Cross multiply
    12,186,662.80x = 16,807,788.52 × 10,713,421.34
  4. Step 4: Simplify right side
    12,186,662.80x = 180,068,920,208,375
  5. Step 5: Solve for x
    x = 180,068,920,208,375/12,186,662.80
  6. Step 6: Final answer
    x = 14,775,900.77

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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.