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Finding the Fourth Proportional to 19,868,800.80, 29,803,201.20 and 18,693,069.60

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Solution

The fourth proportional to 19,868,800.80, 29,803,201.20 and 18,693,069.60 is: 28,039,604.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868,800.80 : 29,803,201.20 = 18,693,069.60 : x
  2. Step 2: Convert to fraction form
    19,868,800.80/29,803,201.20 = 18,693,069.60/x
  3. Step 3: Cross multiply
    19,868,800.80x = 29,803,201.20 × 18,693,069.60
  4. Step 4: Simplify right side
    19,868,800.80x = 557,113,314,334,403.56
  5. Step 5: Solve for x
    x = 557,113,314,334,403.56/19,868,800.80
  6. Step 6: Final answer
    x = 28,039,604.40

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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.