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Finding the Fourth Proportional to 584,081.20, 876,121.80 and 210,055.60

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Solution

The fourth proportional to 584,081.20, 876,121.80 and 210,055.60 is: 315,083.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,081.20 : 876,121.80 = 210,055.60 : x
  2. Step 2: Convert to fraction form
    584,081.20/876,121.80 = 210,055.60/x
  3. Step 3: Cross multiply
    584,081.20x = 876,121.80 × 210,055.60
  4. Step 4: Simplify right side
    584,081.20x = 184,034,290,372.08
  5. Step 5: Solve for x
    x = 184,034,290,372.08/584,081.20
  6. Step 6: Final answer
    x = 315,083.40

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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.