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Finding the Fourth Proportional to 93,160.47, 128,561.46 and 50,719

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Solution

The fourth proportional to 93,160.47, 128,561.46 and 50,719 is: 69,992.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,160.47 : 128,561.46 = 50,719 : x
  2. Step 2: Convert to fraction form
    93,160.47/128,561.46 = 50,719/x
  3. Step 3: Cross multiply
    93,160.47x = 128,561.46 × 50,719
  4. Step 4: Simplify right side
    93,160.47x = 6,520,508,689.74
  5. Step 5: Solve for x
    x = 6,520,508,689.74/93,160.47
  6. Step 6: Final answer
    x = 69,992.23

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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.