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Finding the Fourth Proportional to 589,431.80, 884,147.70 and 190,085.60

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Solution

The fourth proportional to 589,431.80, 884,147.70 and 190,085.60 is: 285,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,431.80 : 884,147.70 = 190,085.60 : x
  2. Step 2: Convert to fraction form
    589,431.80/884,147.70 = 190,085.60/x
  3. Step 3: Cross multiply
    589,431.80x = 884,147.70 × 190,085.60
  4. Step 4: Simplify right side
    589,431.80x = 168,063,746,043.12
  5. Step 5: Solve for x
    x = 168,063,746,043.12/589,431.80
  6. Step 6: Final answer
    x = 285,128.40

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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.