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Finding the Fourth Proportional to 521,000.30, 781,522.05 and 166,004.30

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Solution

The fourth proportional to 521,000.30, 781,522.05 and 166,004.30 is: 249,013.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,000.30 : 781,522.05 = 166,004.30 : x
  2. Step 2: Convert to fraction form
    521,000.30/781,522.05 = 166,004.30/x
  3. Step 3: Cross multiply
    521,000.30x = 781,522.05 × 166,004.30
  4. Step 4: Simplify right side
    521,000.30x = 129,736,020,844.82
  5. Step 5: Solve for x
    x = 129,736,020,844.82/521,000.30
  6. Step 6: Final answer
    x = 249,013.33

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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.