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Finding the Fourth Proportional to 607,319.40, 910,979.10 and 186,616.20

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Solution

The fourth proportional to 607,319.40, 910,979.10 and 186,616.20 is: 279,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,319.40 : 910,979.10 = 186,616.20 : x
  2. Step 2: Convert to fraction form
    607,319.40/910,979.10 = 186,616.20/x
  3. Step 3: Cross multiply
    607,319.40x = 910,979.10 × 186,616.20
  4. Step 4: Simplify right side
    607,319.40x = 170,003,457,921.42
  5. Step 5: Solve for x
    x = 170,003,457,921.42/607,319.40
  6. Step 6: Final answer
    x = 279,924.30

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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.