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Finding the Fourth Proportional to 93,138.61, 128,531.46 and 50,697.04

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Solution

The fourth proportional to 93,138.61, 128,531.46 and 50,697.04 is: 69,962.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,138.61 : 128,531.46 = 50,697.04 : x
  2. Step 2: Convert to fraction form
    93,138.61/128,531.46 = 50,697.04/x
  3. Step 3: Cross multiply
    93,138.61x = 128,531.46 × 50,697.04
  4. Step 4: Simplify right side
    93,138.61x = 6,516,164,568.88
  5. Step 5: Solve for x
    x = 6,516,164,568.88/93,138.61
  6. Step 6: Final answer
    x = 69,962.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.