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Finding the Fourth Proportional to 619,615.20, 929,403.60 and 176,383.20

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Solution

The fourth proportional to 619,615.20, 929,403.60 and 176,383.20 is: 264,569.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,615.20 : 929,403.60 = 176,383.20 : x
  2. Step 2: Convert to fraction form
    619,615.20/929,403.60 = 176,383.20/x
  3. Step 3: Cross multiply
    619,615.20x = 929,403.60 × 176,383.20
  4. Step 4: Simplify right side
    619,615.20x = 163,931,181,059.52
  5. Step 5: Solve for x
    x = 163,931,181,059.52/619,615.20
  6. Step 6: Final answer
    x = 264,569.33

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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.