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Finding the Fourth Proportional to 93,280.57, 139,920.85 and 23,159.88

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Solution

The fourth proportional to 93,280.57, 139,920.85 and 23,159.88 is: 34,739.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,280.57 : 139,920.85 = 23,159.88 : x
  2. Step 2: Convert to fraction form
    93,280.57/139,920.85 = 23,159.88/x
  3. Step 3: Cross multiply
    93,280.57x = 139,920.85 × 23,159.88
  4. Step 4: Simplify right side
    93,280.57x = 3,240,549,979.70
  5. Step 5: Solve for x
    x = 3,240,549,979.70/93,280.57
  6. Step 6: Final answer
    x = 34,739.82

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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.