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Finding the Fourth Proportional to 70,208,999.60, 105,171,781.80 and 70,208,999.60

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Solution

The fourth proportional to 70,208,999.60, 105,171,781.80 and 70,208,999.60 is: 105,171,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,208,999.60 : 105,171,781.80 = 70,208,999.60 : x
  2. Step 2: Convert to fraction form
    70,208,999.60/105,171,781.80 = 70,208,999.60/x
  3. Step 3: Cross multiply
    70,208,999.60x = 105,171,781.80 × 70,208,999.60
  4. Step 4: Simplify right side
    70,208,999.60x = 7,384,005,586,327,486
  5. Step 5: Solve for x
    x = 7,384,005,586,327,486/70,208,999.60
  6. Step 6: Final answer
    x = 105,171,781.80

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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.