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Finding the Fourth Proportional to 93,120.76, 139,602.90 and 75,547

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Solution

The fourth proportional to 93,120.76, 139,602.90 and 75,547 is: 113,257.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,120.76 : 139,602.90 = 75,547 : x
  2. Step 2: Convert to fraction form
    93,120.76/139,602.90 = 75,547/x
  3. Step 3: Cross multiply
    93,120.76x = 139,602.90 × 75,547
  4. Step 4: Simplify right side
    93,120.76x = 10,546,580,286.30
  5. Step 5: Solve for x
    x = 10,546,580,286.30/93,120.76
  6. Step 6: Final answer
    x = 113,257.03

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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.