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Finding the Fourth Proportional to 552,128.70, 828,193.05 and 197,312.70

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Solution

The fourth proportional to 552,128.70, 828,193.05 and 197,312.70 is: 295,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,128.70 : 828,193.05 = 197,312.70 : x
  2. Step 2: Convert to fraction form
    552,128.70/828,193.05 = 197,312.70/x
  3. Step 3: Cross multiply
    552,128.70x = 828,193.05 × 197,312.70
  4. Step 4: Simplify right side
    552,128.70x = 163,413,006,816.74
  5. Step 5: Solve for x
    x = 163,413,006,816.74/552,128.70
  6. Step 6: Final answer
    x = 295,969.05

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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.