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Finding the Fourth Proportional to 329,812.48, 455,141.38 and 186,569.48

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Solution

The fourth proportional to 329,812.48, 455,141.38 and 186,569.48 is: 257,465.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,812.48 : 455,141.38 = 186,569.48 : x
  2. Step 2: Convert to fraction form
    329,812.48/455,141.38 = 186,569.48/x
  3. Step 3: Cross multiply
    329,812.48x = 455,141.38 × 186,569.48
  4. Step 4: Simplify right side
    329,812.48x = 84,915,490,593.08
  5. Step 5: Solve for x
    x = 84,915,490,593.08/329,812.48
  6. Step 6: Final answer
    x = 257,465.97

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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.