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Finding the Fourth Proportional to 14,338,811.20, 21,508,216.80 and 10,755,630.40

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Solution

The fourth proportional to 14,338,811.20, 21,508,216.80 and 10,755,630.40 is: 16,133,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,338,811.20 : 21,508,216.80 = 10,755,630.40 : x
  2. Step 2: Convert to fraction form
    14,338,811.20/21,508,216.80 = 10,755,630.40/x
  3. Step 3: Cross multiply
    14,338,811.20x = 21,508,216.80 × 10,755,630.40
  4. Step 4: Simplify right side
    14,338,811.20x = 231,334,430,463,870.75
  5. Step 5: Solve for x
    x = 231,334,430,463,870.75/14,338,811.20
  6. Step 6: Final answer
    x = 16,133,445.60

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1.5x scale

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.