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Finding the Fourth Proportional to 93,357.84, 139,911.67 and 87,379.12

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Solution

The fourth proportional to 93,357.84, 139,911.67 and 87,379.12 is: 130,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,357.84 : 139,911.67 = 87,379.12 : x
  2. Step 2: Convert to fraction form
    93,357.84/139,911.67 = 87,379.12/x
  3. Step 3: Cross multiply
    93,357.84x = 139,911.67 × 87,379.12
  4. Step 4: Simplify right side
    93,357.84x = 12,225,358,602.33
  5. Step 5: Solve for x
    x = 12,225,358,602.33/93,357.84
  6. Step 6: Final answer
    x = 130,951.60

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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.