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Finding the Fourth Proportional to 93,312,811.20, 139,969,216.80 and 39,460,123.20

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Solution

The fourth proportional to 93,312,811.20, 139,969,216.80 and 39,460,123.20 is: 59,190,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,811.20 : 139,969,216.80 = 39,460,123.20 : x
  2. Step 2: Convert to fraction form
    93,312,811.20/139,969,216.80 = 39,460,123.20/x
  3. Step 3: Cross multiply
    93,312,811.20x = 139,969,216.80 × 39,460,123.20
  4. Step 4: Simplify right side
    93,312,811.20x = 5,523,202,539,135,511
  5. Step 5: Solve for x
    x = 5,523,202,539,135,511/93,312,811.20
  6. Step 6: Final answer
    x = 59,190,184.80

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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.