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Finding the Fourth Proportional to 543,328.40, 814,988.55 and 164,248.40

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Solution

The fourth proportional to 543,328.40, 814,988.55 and 164,248.40 is: 246,371.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,328.40 : 814,988.55 = 164,248.40 : x
  2. Step 2: Convert to fraction form
    543,328.40/814,988.55 = 164,248.40/x
  3. Step 3: Cross multiply
    543,328.40x = 814,988.55 × 164,248.40
  4. Step 4: Simplify right side
    543,328.40x = 133,860,565,355.82
  5. Step 5: Solve for x
    x = 133,860,565,355.82/543,328.40
  6. Step 6: Final answer
    x = 246,371.38

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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.