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Finding the Fourth Proportional to 98,495,998.80, 147,743,998.20 and 43,908,478.80

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Solution

The fourth proportional to 98,495,998.80, 147,743,998.20 and 43,908,478.80 is: 65,862,718.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,495,998.80 : 147,743,998.20 = 43,908,478.80 : x
  2. Step 2: Convert to fraction form
    98,495,998.80/147,743,998.20 = 43,908,478.80/x
  3. Step 3: Cross multiply
    98,495,998.80x = 147,743,998.20 × 43,908,478.80
  4. Step 4: Simplify right side
    98,495,998.80x = 6,487,214,212,791,937
  5. Step 5: Solve for x
    x = 6,487,214,212,791,937/98,495,998.80
  6. Step 6: Final answer
    x = 65,862,718.20

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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.