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Finding the Fourth Proportional to 39,698,748.80, 55,691,622.40 and 39,698,748.80

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Solution

The fourth proportional to 39,698,748.80, 55,691,622.40 and 39,698,748.80 is: 55,691,622.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,698,748.80 : 55,691,622.40 = 39,698,748.80 : x
  2. Step 2: Convert to fraction form
    39,698,748.80/55,691,622.40 = 39,698,748.80/x
  3. Step 3: Cross multiply
    39,698,748.80x = 55,691,622.40 × 39,698,748.80
  4. Step 4: Simplify right side
    39,698,748.80x = 2,210,887,727,922,053
  5. Step 5: Solve for x
    x = 2,210,887,727,922,053/39,698,748.80
  6. Step 6: Final answer
    x = 55,691,622.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.