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Finding the Fourth Proportional to 623,654.32, 860,642.92 and 337,174.32

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Solution

The fourth proportional to 623,654.32, 860,642.92 and 337,174.32 is: 465,300.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,654.32 : 860,642.92 = 337,174.32 : x
  2. Step 2: Convert to fraction form
    623,654.32/860,642.92 = 337,174.32/x
  3. Step 3: Cross multiply
    623,654.32x = 860,642.92 × 337,174.32
  4. Step 4: Simplify right side
    623,654.32x = 290,186,691,313.81
  5. Step 5: Solve for x
    x = 290,186,691,313.81/623,654.32
  6. Step 6: Final answer
    x = 465,300.54

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Double scale
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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.