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Finding the Fourth Proportional to 673,248.52, 928,968.76 and 401,311.56

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Solution

The fourth proportional to 673,248.52, 928,968.76 and 401,311.56 is: 553,741.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,248.52 : 928,968.76 = 401,311.56 : x
  2. Step 2: Convert to fraction form
    673,248.52/928,968.76 = 401,311.56/x
  3. Step 3: Cross multiply
    673,248.52x = 928,968.76 × 401,311.56
  4. Step 4: Simplify right side
    673,248.52x = 372,805,902,266.87
  5. Step 5: Solve for x
    x = 372,805,902,266.87/673,248.52
  6. Step 6: Final answer
    x = 553,741.88

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Half scale
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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.