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Finding the Fourth Proportional to 93,312,122.60, 139,968,183.90 and 86,509,677.80

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Solution

The fourth proportional to 93,312,122.60, 139,968,183.90 and 86,509,677.80 is: 129,764,516.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,122.60 : 139,968,183.90 = 86,509,677.80 : x
  2. Step 2: Convert to fraction form
    93,312,122.60/139,968,183.90 = 86,509,677.80/x
  3. Step 3: Cross multiply
    93,312,122.60x = 139,968,183.90 × 86,509,677.80
  4. Step 4: Simplify right side
    93,312,122.60x = 12,108,602,491,440,148
  5. Step 5: Solve for x
    x = 12,108,602,491,440,148/93,312,122.60
  6. Step 6: Final answer
    x = 129,764,516.70

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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.