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Finding the Fourth Proportional to 319,115.62, 440,384.70 and 175,873.60

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Solution

The fourth proportional to 319,115.62, 440,384.70 and 175,873.60 is: 242,708.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,115.62 : 440,384.70 = 175,873.60 : x
  2. Step 2: Convert to fraction form
    319,115.62/440,384.70 = 175,873.60/x
  3. Step 3: Cross multiply
    319,115.62x = 440,384.70 × 175,873.60
  4. Step 4: Simplify right side
    319,115.62x = 77,452,042,573.92
  5. Step 5: Solve for x
    x = 77,452,042,573.92/319,115.62
  6. Step 6: Final answer
    x = 242,708.40

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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.