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Finding the Fourth Proportional to 93,312,092.40, 139,968,138.60 and 86,509,647.60

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Solution

The fourth proportional to 93,312,092.40, 139,968,138.60 and 86,509,647.60 is: 129,764,471.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,092.40 : 139,968,138.60 = 86,509,647.60 : x
  2. Step 2: Convert to fraction form
    93,312,092.40/139,968,138.60 = 86,509,647.60/x
  3. Step 3: Cross multiply
    93,312,092.40x = 139,968,138.60 × 86,509,647.60
  4. Step 4: Simplify right side
    93,312,092.40x = 12,108,594,345,513,956
  5. Step 5: Solve for x
    x = 12,108,594,345,513,956/93,312,092.40
  6. Step 6: Final answer
    x = 129,764,471.40

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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.