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Finding the Fourth Proportional to 611,561.70, 916,905.15 and 274,326.30

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Solution

The fourth proportional to 611,561.70, 916,905.15 and 274,326.30 is: 411,293.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,561.70 : 916,905.15 = 274,326.30 : x
  2. Step 2: Convert to fraction form
    611,561.70/916,905.15 = 274,326.30/x
  3. Step 3: Cross multiply
    611,561.70x = 916,905.15 × 274,326.30
  4. Step 4: Simplify right side
    611,561.70x = 251,531,197,250.45
  5. Step 5: Solve for x
    x = 251,531,197,250.45/611,561.70
  6. Step 6: Final answer
    x = 411,293.25

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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.