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Finding the Fourth Proportional to 526,714.80, 789,553.80 and 260,516.40

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Solution

The fourth proportional to 526,714.80, 789,553.80 and 260,516.40 is: 390,518.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,714.80 : 789,553.80 = 260,516.40 : x
  2. Step 2: Convert to fraction form
    526,714.80/789,553.80 = 260,516.40/x
  3. Step 3: Cross multiply
    526,714.80x = 789,553.80 × 260,516.40
  4. Step 4: Simplify right side
    526,714.80x = 205,691,713,582.32
  5. Step 5: Solve for x
    x = 205,691,713,582.32/526,714.80
  6. Step 6: Final answer
    x = 390,518.20

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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.