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Finding the Fourth Proportional to 511,303.74, 705,601.38 and 281,856.10

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Solution

The fourth proportional to 511,303.74, 705,601.38 and 281,856.10 is: 388,962.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,303.74 : 705,601.38 = 281,856.10 : x
  2. Step 2: Convert to fraction form
    511,303.74/705,601.38 = 281,856.10/x
  3. Step 3: Cross multiply
    511,303.74x = 705,601.38 × 281,856.10
  4. Step 4: Simplify right side
    511,303.74x = 198,878,053,121.42
  5. Step 5: Solve for x
    x = 198,878,053,121.42/511,303.74
  6. Step 6: Final answer
    x = 388,962.64

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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.