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Finding the Fourth Proportional to 407,549.48, 611,127.60 and 170,828.60

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Solution

The fourth proportional to 407,549.48, 611,127.60 and 170,828.60 is: 256,160.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,549.48 : 611,127.60 = 170,828.60 : x
  2. Step 2: Convert to fraction form
    407,549.48/611,127.60 = 170,828.60/x
  3. Step 3: Cross multiply
    407,549.48x = 611,127.60 × 170,828.60
  4. Step 4: Simplify right side
    407,549.48x = 104,398,073,216.57
  5. Step 5: Solve for x
    x = 104,398,073,216.57/407,549.48
  6. Step 6: Final answer
    x = 256,160.49

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1.5x scale

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.