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Finding the Fourth Proportional to 93,176, 139,841.76 and 43,928

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Solution

The fourth proportional to 93,176, 139,841.76 and 43,928 is: 65,928.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,176 : 139,841.76 = 43,928 : x
  2. Step 2: Convert to fraction form
    93,176/139,841.76 = 43,928/x
  3. Step 3: Cross multiply
    93,176x = 139,841.76 × 43,928
  4. Step 4: Simplify right side
    93,176x = 6,142,968,833.28
  5. Step 5: Solve for x
    x = 6,142,968,833.28/93,176
  6. Step 6: Final answer
    x = 65,928.66

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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.