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Finding the Fourth Proportional to 511,055.70, 766,583.55 and 351,623.40

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Solution

The fourth proportional to 511,055.70, 766,583.55 and 351,623.40 is: 527,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,055.70 : 766,583.55 = 351,623.40 : x
  2. Step 2: Convert to fraction form
    511,055.70/766,583.55 = 351,623.40/x
  3. Step 3: Cross multiply
    511,055.70x = 766,583.55 × 351,623.40
  4. Step 4: Simplify right side
    511,055.70x = 269,548,714,235.07
  5. Step 5: Solve for x
    x = 269,548,714,235.07/511,055.70
  6. Step 6: Final answer
    x = 527,435.10

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.