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Finding the Fourth Proportional to 280,148.98, 386,605.09 and 152,824.54

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Solution

The fourth proportional to 280,148.98, 386,605.09 and 152,824.54 is: 210,897.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,148.98 : 386,605.09 = 152,824.54 : x
  2. Step 2: Convert to fraction form
    280,148.98/386,605.09 = 152,824.54/x
  3. Step 3: Cross multiply
    280,148.98x = 386,605.09 × 152,824.54
  4. Step 4: Simplify right side
    280,148.98x = 59,082,745,040.91
  5. Step 5: Solve for x
    x = 59,082,745,040.91/280,148.98
  6. Step 6: Final answer
    x = 210,897.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.