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Finding the Fourth Proportional to 713,795.96, 985,351.38 and 499,775.24

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Solution

The fourth proportional to 713,795.96, 985,351.38 and 499,775.24 is: 689,908.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,795.96 : 985,351.38 = 499,775.24 : x
  2. Step 2: Convert to fraction form
    713,795.96/985,351.38 = 499,775.24/x
  3. Step 3: Cross multiply
    713,795.96x = 985,351.38 × 499,775.24
  4. Step 4: Simplify right side
    713,795.96x = 492,454,222,423.83
  5. Step 5: Solve for x
    x = 492,454,222,423.83/713,795.96
  6. Step 6: Final answer
    x = 689,908.95

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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.