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Finding the Fourth Proportional to 343,811.01, 516,055.92 and 258,123.84

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Solution

The fourth proportional to 343,811.01, 516,055.92 and 258,123.84 is: 387,440.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,811.01 : 516,055.92 = 258,123.84 : x
  2. Step 2: Convert to fraction form
    343,811.01/516,055.92 = 258,123.84/x
  3. Step 3: Cross multiply
    343,811.01x = 516,055.92 × 258,123.84
  4. Step 4: Simplify right side
    343,811.01x = 133,206,335,725.13
  5. Step 5: Solve for x
    x = 133,206,335,725.13/343,811.01
  6. Step 6: Final answer
    x = 387,440.58

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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.