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Finding the Fourth Proportional to 93,458.16, 128,967.74 and 53,168.12

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Solution

The fourth proportional to 93,458.16, 128,967.74 and 53,168.12 is: 73,369.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,458.16 : 128,967.74 = 53,168.12 : x
  2. Step 2: Convert to fraction form
    93,458.16/128,967.74 = 53,168.12/x
  3. Step 3: Cross multiply
    93,458.16x = 128,967.74 × 53,168.12
  4. Step 4: Simplify right side
    93,458.16x = 6,856,972,276.45
  5. Step 5: Solve for x
    x = 6,856,972,276.45/93,458.16
  6. Step 6: Final answer
    x = 73,369.43

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1.5x scale

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.