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Finding the Fourth Proportional to 93,312,107.80, 139,968,161.70 and 42,195,794.20

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Solution

The fourth proportional to 93,312,107.80, 139,968,161.70 and 42,195,794.20 is: 63,293,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,107.80 : 139,968,161.70 = 42,195,794.20 : x
  2. Step 2: Convert to fraction form
    93,312,107.80/139,968,161.70 = 42,195,794.20/x
  3. Step 3: Cross multiply
    93,312,107.80x = 139,968,161.70 × 42,195,794.20
  4. Step 4: Simplify right side
    93,312,107.80x = 5,906,067,745,645,522
  5. Step 5: Solve for x
    x = 5,906,067,745,645,522/93,312,107.80
  6. Step 6: Final answer
    x = 63,293,691.30

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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.