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Finding the Fourth Proportional to 611,739.54, 917,774.15 and 256,658.22

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Solution

The fourth proportional to 611,739.54, 917,774.15 and 256,658.22 is: 385,056.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,739.54 : 917,774.15 = 256,658.22 : x
  2. Step 2: Convert to fraction form
    611,739.54/917,774.15 = 256,658.22/x
  3. Step 3: Cross multiply
    611,739.54x = 917,774.15 × 256,658.22
  4. Step 4: Simplify right side
    611,739.54x = 235,554,278,417.72
  5. Step 5: Solve for x
    x = 235,554,278,417.72/611,739.54
  6. Step 6: Final answer
    x = 385,056.49

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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.