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Finding the Fourth Proportional to 557,612.76, 769,503.60 and 302,961.72

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Solution

The fourth proportional to 557,612.76, 769,503.60 and 302,961.72 is: 418,086.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,612.76 : 769,503.60 = 302,961.72 : x
  2. Step 2: Convert to fraction form
    557,612.76/769,503.60 = 302,961.72/x
  3. Step 3: Cross multiply
    557,612.76x = 769,503.60 × 302,961.72
  4. Step 4: Simplify right side
    557,612.76x = 233,130,134,202.19
  5. Step 5: Solve for x
    x = 233,130,134,202.19/557,612.76
  6. Step 6: Final answer
    x = 418,086.08

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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.