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Finding the Fourth Proportional to 584,990, 877,485.12 and 211,012.96

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Solution

The fourth proportional to 584,990, 877,485.12 and 211,012.96 is: 316,519.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,990 : 877,485.12 = 211,012.96 : x
  2. Step 2: Convert to fraction form
    584,990/877,485.12 = 211,012.96/x
  3. Step 3: Cross multiply
    584,990x = 877,485.12 × 211,012.96
  4. Step 4: Simplify right side
    584,990x = 185,160,732,527.16
  5. Step 5: Solve for x
    x = 185,160,732,527.16/584,990
  6. Step 6: Final answer
    x = 316,519.48

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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.