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Finding the Fourth Proportional to 572,803.20, 859,204.80 and 492,321.60

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Solution

The fourth proportional to 572,803.20, 859,204.80 and 492,321.60 is: 738,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,803.20 : 859,204.80 = 492,321.60 : x
  2. Step 2: Convert to fraction form
    572,803.20/859,204.80 = 492,321.60/x
  3. Step 3: Cross multiply
    572,803.20x = 859,204.80 × 492,321.60
  4. Step 4: Simplify right side
    572,803.20x = 423,005,081,863.68
  5. Step 5: Solve for x
    x = 423,005,081,863.68/572,803.20
  6. Step 6: Final answer
    x = 738,482.40

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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.