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Finding the Fourth Proportional to 93,312,013.20, 139,968,019.80 and 82,352,518.80

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Solution

The fourth proportional to 93,312,013.20, 139,968,019.80 and 82,352,518.80 is: 123,528,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,013.20 : 139,968,019.80 = 82,352,518.80 : x
  2. Step 2: Convert to fraction form
    93,312,013.20/139,968,019.80 = 82,352,518.80/x
  3. Step 3: Cross multiply
    93,312,013.20x = 139,968,019.80 × 82,352,518.80
  4. Step 4: Simplify right side
    93,312,013.20x = 11,526,718,981,978,272
  5. Step 5: Solve for x
    x = 11,526,718,981,978,272/93,312,013.20
  6. Step 6: Final answer
    x = 123,528,778.20

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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.