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Finding the Fourth Proportional to 93,342.60, 139,904.55 and 69,941.70

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Solution

The fourth proportional to 93,342.60, 139,904.55 and 69,941.70 is: 104,830.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,342.60 : 139,904.55 = 69,941.70 : x
  2. Step 2: Convert to fraction form
    93,342.60/139,904.55 = 69,941.70/x
  3. Step 3: Cross multiply
    93,342.60x = 139,904.55 × 69,941.70
  4. Step 4: Simplify right side
    93,342.60x = 9,785,162,064.74
  5. Step 5: Solve for x
    x = 9,785,162,064.74/93,342.60
  6. Step 6: Final answer
    x = 104,830.61

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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.