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Finding the Fourth Proportional to 12,357,651.60, 18,536,477.40 and 11,853,766.80

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Solution

The fourth proportional to 12,357,651.60, 18,536,477.40 and 11,853,766.80 is: 17,780,650.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357,651.60 : 18,536,477.40 = 11,853,766.80 : x
  2. Step 2: Convert to fraction form
    12,357,651.60/18,536,477.40 = 11,853,766.80/x
  3. Step 3: Cross multiply
    12,357,651.60x = 18,536,477.40 × 11,853,766.80
  4. Step 4: Simplify right side
    12,357,651.60x = 219,727,080,393,070.31
  5. Step 5: Solve for x
    x = 219,727,080,393,070.31/12,357,651.60
  6. Step 6: Final answer
    x = 17,780,650.20

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Similar ratio
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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.