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Finding the Fourth Proportional to 665,601.80, 998,532.30 and 286,521.80

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Solution

The fourth proportional to 665,601.80, 998,532.30 and 286,521.80 is: 429,838.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,601.80 : 998,532.30 = 286,521.80 : x
  2. Step 2: Convert to fraction form
    665,601.80/998,532.30 = 286,521.80/x
  3. Step 3: Cross multiply
    665,601.80x = 998,532.30 × 286,521.80
  4. Step 4: Simplify right side
    665,601.80x = 286,101,271,954.14
  5. Step 5: Solve for x
    x = 286,101,271,954.14/665,601.80
  6. Step 6: Final answer
    x = 429,838.49

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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.