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Finding the Fourth Proportional to 541,521.64, 812,807.34 and 261,235.72

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Solution

The fourth proportional to 541,521.64, 812,807.34 and 261,235.72 is: 392,106.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,521.64 : 812,807.34 = 261,235.72 : x
  2. Step 2: Convert to fraction form
    541,521.64/812,807.34 = 261,235.72/x
  3. Step 3: Cross multiply
    541,521.64x = 812,807.34 × 261,235.72
  4. Step 4: Simplify right side
    541,521.64x = 212,334,310,686.19
  5. Step 5: Solve for x
    x = 212,334,310,686.19/541,521.64
  6. Step 6: Final answer
    x = 392,106.79

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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.