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Finding the Fourth Proportional to 69,894,136.60, 104,841,204.90 and 42,684,357.40

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Solution

The fourth proportional to 69,894,136.60, 104,841,204.90 and 42,684,357.40 is: 64,026,536.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,894,136.60 : 104,841,204.90 = 42,684,357.40 : x
  2. Step 2: Convert to fraction form
    69,894,136.60/104,841,204.90 = 42,684,357.40/x
  3. Step 3: Cross multiply
    69,894,136.60x = 104,841,204.90 × 42,684,357.40
  4. Step 4: Simplify right side
    69,894,136.60x = 4,475,079,460,198,231.50
  5. Step 5: Solve for x
    x = 4,475,079,460,198,231.50/69,894,136.60
  6. Step 6: Final answer
    x = 64,026,536.10

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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.