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Finding the Fourth Proportional to 545,687.11, 753,056.22 and 316,261.36

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Solution

The fourth proportional to 545,687.11, 753,056.22 and 316,261.36 is: 436,445.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,687.11 : 753,056.22 = 316,261.36 : x
  2. Step 2: Convert to fraction form
    545,687.11/753,056.22 = 316,261.36/x
  3. Step 3: Cross multiply
    545,687.11x = 753,056.22 × 316,261.36
  4. Step 4: Simplify right side
    545,687.11x = 238,162,584,293.66
  5. Step 5: Solve for x
    x = 238,162,584,293.66/545,687.11
  6. Step 6: Final answer
    x = 436,445.32

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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.