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Finding the Fourth Proportional to 514,415.40, 771,623.10 and 159,465.30

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Solution

The fourth proportional to 514,415.40, 771,623.10 and 159,465.30 is: 239,197.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,415.40 : 771,623.10 = 159,465.30 : x
  2. Step 2: Convert to fraction form
    514,415.40/771,623.10 = 159,465.30/x
  3. Step 3: Cross multiply
    514,415.40x = 771,623.10 × 159,465.30
  4. Step 4: Simplify right side
    514,415.40x = 123,047,109,128.43
  5. Step 5: Solve for x
    x = 123,047,109,128.43/514,415.40
  6. Step 6: Final answer
    x = 239,197.95

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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.