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Finding the Fourth Proportional to 343,783.02, 474,411.44 and 190,820.78

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Solution

The fourth proportional to 343,783.02, 474,411.44 and 190,820.78 is: 263,327.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,783.02 : 474,411.44 = 190,820.78 : x
  2. Step 2: Convert to fraction form
    343,783.02/474,411.44 = 190,820.78/x
  3. Step 3: Cross multiply
    343,783.02x = 474,411.44 × 190,820.78
  4. Step 4: Simplify right side
    343,783.02x = 90,527,561,021.72
  5. Step 5: Solve for x
    x = 90,527,561,021.72/343,783.02
  6. Step 6: Final answer
    x = 263,327.61

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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.