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Finding the Fourth Proportional to 19,668,697.20, 29,503,045.80 and 18,157,042.80

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Solution

The fourth proportional to 19,668,697.20, 29,503,045.80 and 18,157,042.80 is: 27,235,564.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,668,697.20 : 29,503,045.80 = 18,157,042.80 : x
  2. Step 2: Convert to fraction form
    19,668,697.20/29,503,045.80 = 18,157,042.80/x
  3. Step 3: Cross multiply
    19,668,697.20x = 29,503,045.80 × 18,157,042.80
  4. Step 4: Simplify right side
    19,668,697.20x = 535,688,065,320,960.25
  5. Step 5: Solve for x
    x = 535,688,065,320,960.25/19,668,697.20
  6. Step 6: Final answer
    x = 27,235,564.20

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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.