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Finding the Fourth Proportional to 517,908.80, 776,863.20 and 163,031.60

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Solution

The fourth proportional to 517,908.80, 776,863.20 and 163,031.60 is: 244,547.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,908.80 : 776,863.20 = 163,031.60 : x
  2. Step 2: Convert to fraction form
    517,908.80/776,863.20 = 163,031.60/x
  3. Step 3: Cross multiply
    517,908.80x = 776,863.20 × 163,031.60
  4. Step 4: Simplify right side
    517,908.80x = 126,653,250,477.12
  5. Step 5: Solve for x
    x = 126,653,250,477.12/517,908.80
  6. Step 6: Final answer
    x = 244,547.40

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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.