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Finding the Fourth Proportional to 713,817.56, 985,155.72 and 412,011.56

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Solution

The fourth proportional to 713,817.56, 985,155.72 and 412,011.56 is: 568,626.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,817.56 : 985,155.72 = 412,011.56 : x
  2. Step 2: Convert to fraction form
    713,817.56/985,155.72 = 412,011.56/x
  3. Step 3: Cross multiply
    713,817.56x = 985,155.72 × 412,011.56
  4. Step 4: Simplify right side
    713,817.56x = 405,895,545,957.97
  5. Step 5: Solve for x
    x = 405,895,545,957.97/713,817.56
  6. Step 6: Final answer
    x = 568,626.45

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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.