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Finding the Fourth Proportional to 93,149.30, 139,688.58 and 39,838.98

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Solution

The fourth proportional to 93,149.30, 139,688.58 and 39,838.98 is: 59,743.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,149.30 : 139,688.58 = 39,838.98 : x
  2. Step 2: Convert to fraction form
    93,149.30/139,688.58 = 39,838.98/x
  3. Step 3: Cross multiply
    93,149.30x = 139,688.58 × 39,838.98
  4. Step 4: Simplify right side
    93,149.30x = 5,565,050,544.85
  5. Step 5: Solve for x
    x = 5,565,050,544.85/93,149.30
  6. Step 6: Final answer
    x = 59,743.34

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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.