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Finding the Fourth Proportional to 13,706,635.60, 20,559,953.40 and 12,530,904.40

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Solution

The fourth proportional to 13,706,635.60, 20,559,953.40 and 12,530,904.40 is: 18,796,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,706,635.60 : 20,559,953.40 = 12,530,904.40 : x
  2. Step 2: Convert to fraction form
    13,706,635.60/20,559,953.40 = 12,530,904.40/x
  3. Step 3: Cross multiply
    13,706,635.60x = 20,559,953.40 × 12,530,904.40
  4. Step 4: Simplify right side
    13,706,635.60x = 257,634,810,523,854.94
  5. Step 5: Solve for x
    x = 257,634,810,523,854.94/13,706,635.60
  6. Step 6: Final answer
    x = 18,796,356.60

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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.