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Finding the Fourth Proportional to 93,315, 139,986.60 and 30,114

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Solution

The fourth proportional to 93,315, 139,986.60 and 30,114 is: 45,175.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,315 : 139,986.60 = 30,114 : x
  2. Step 2: Convert to fraction form
    93,315/139,986.60 = 30,114/x
  3. Step 3: Cross multiply
    93,315x = 139,986.60 × 30,114
  4. Step 4: Simplify right side
    93,315x = 4,215,556,472.40
  5. Step 5: Solve for x
    x = 4,215,556,472.40/93,315
  6. Step 6: Final answer
    x = 45,175.55

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.