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Finding the Fourth Proportional to 581,431.40, 872,147.10 and 546,410.60

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Solution

The fourth proportional to 581,431.40, 872,147.10 and 546,410.60 is: 819,615.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,431.40 : 872,147.10 = 546,410.60 : x
  2. Step 2: Convert to fraction form
    581,431.40/872,147.10 = 546,410.60/x
  3. Step 3: Cross multiply
    581,431.40x = 872,147.10 × 546,410.60
  4. Step 4: Simplify right side
    581,431.40x = 476,550,420,199.26
  5. Step 5: Solve for x
    x = 476,550,420,199.26/581,431.40
  6. Step 6: Final answer
    x = 819,615.90

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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.