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Finding the Fourth Proportional to 611,036.84, 916,336.56 and 211,570.36

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Solution

The fourth proportional to 611,036.84, 916,336.56 and 211,570.36 is: 317,279.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,036.84 : 916,336.56 = 211,570.36 : x
  2. Step 2: Convert to fraction form
    611,036.84/916,336.56 = 211,570.36/x
  3. Step 3: Cross multiply
    611,036.84x = 916,336.56 × 211,570.36
  4. Step 4: Simplify right side
    611,036.84x = 193,869,655,880.36
  5. Step 5: Solve for x
    x = 193,869,655,880.36/611,036.84
  6. Step 6: Final answer
    x = 317,279.82

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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.