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Finding the Fourth Proportional to 611,039.84, 916,341.06 and 211,573.40

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Solution

The fourth proportional to 611,039.84, 916,341.06 and 211,573.40 is: 317,284.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,039.84 : 916,341.06 = 211,573.40 : x
  2. Step 2: Convert to fraction form
    611,039.84/916,341.06 = 211,573.40/x
  3. Step 3: Cross multiply
    611,039.84x = 916,341.06 × 211,573.40
  4. Step 4: Simplify right side
    611,039.84x = 193,873,393,623.80
  5. Step 5: Solve for x
    x = 193,873,393,623.80/611,039.84
  6. Step 6: Final answer
    x = 317,284.37

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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.