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Finding the Fourth Proportional to 614,467.40, 921,701.10 and 171,235.40

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Solution

The fourth proportional to 614,467.40, 921,701.10 and 171,235.40 is: 256,853.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,467.40 : 921,701.10 = 171,235.40 : x
  2. Step 2: Convert to fraction form
    614,467.40/921,701.10 = 171,235.40/x
  3. Step 3: Cross multiply
    614,467.40x = 921,701.10 × 171,235.40
  4. Step 4: Simplify right side
    614,467.40x = 157,827,856,538.94
  5. Step 5: Solve for x
    x = 157,827,856,538.94/614,467.40
  6. Step 6: Final answer
    x = 256,853.10

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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.