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Finding the Fourth Proportional to 557,995.84, 768,972.42 and 404,769.76

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Solution

The fourth proportional to 557,995.84, 768,972.42 and 404,769.76 is: 557,812.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,995.84 : 768,972.42 = 404,769.76 : x
  2. Step 2: Convert to fraction form
    557,995.84/768,972.42 = 404,769.76/x
  3. Step 3: Cross multiply
    557,995.84x = 768,972.42 × 404,769.76
  4. Step 4: Simplify right side
    557,995.84x = 311,256,781,890.02
  5. Step 5: Solve for x
    x = 311,256,781,890.02/557,995.84
  6. Step 6: Final answer
    x = 557,812.01

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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.