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Finding the Fourth Proportional to 98,933,999.90, 138,601,971.70 and 98,933,999.90

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Solution

The fourth proportional to 98,933,999.90, 138,601,971.70 and 98,933,999.90 is: 138,601,971.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,933,999.90 : 138,601,971.70 = 98,933,999.90 : x
  2. Step 2: Convert to fraction form
    98,933,999.90/138,601,971.70 = 98,933,999.90/x
  3. Step 3: Cross multiply
    98,933,999.90x = 138,601,971.70 × 98,933,999.90
  4. Step 4: Simplify right side
    98,933,999.90x = 13,712,447,454,307,602
  5. Step 5: Solve for x
    x = 13,712,447,454,307,602/98,933,999.90
  6. Step 6: Final answer
    x = 138,601,971.70

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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.