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Finding the Fourth Proportional to 682,597.96, 942,172.55 and 396,210.31

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Solution

The fourth proportional to 682,597.96, 942,172.55 and 396,210.31 is: 546,878.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,597.96 : 942,172.55 = 396,210.31 : x
  2. Step 2: Convert to fraction form
    682,597.96/942,172.55 = 396,210.31/x
  3. Step 3: Cross multiply
    682,597.96x = 942,172.55 × 396,210.31
  4. Step 4: Simplify right side
    682,597.96x = 373,298,478,108.99
  5. Step 5: Solve for x
    x = 373,298,478,108.99/682,597.96
  6. Step 6: Final answer
    x = 546,878.98

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.