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Finding the Fourth Proportional to 93,079.20, 139,465.20 and 79,255.20

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Solution

The fourth proportional to 93,079.20, 139,465.20 and 79,255.20 is: 118,752.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,079.20 : 139,465.20 = 79,255.20 : x
  2. Step 2: Convert to fraction form
    93,079.20/139,465.20 = 79,255.20/x
  3. Step 3: Cross multiply
    93,079.20x = 139,465.20 × 79,255.20
  4. Step 4: Simplify right side
    93,079.20x = 11,053,342,319.04
  5. Step 5: Solve for x
    x = 11,053,342,319.04/93,079.20
  6. Step 6: Final answer
    x = 118,752.01

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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.