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Finding the Fourth Proportional to 319,200.60, 440,499.90 and 175,965.80

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Solution

The fourth proportional to 319,200.60, 440,499.90 and 175,965.80 is: 242,834.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,200.60 : 440,499.90 = 175,965.80 : x
  2. Step 2: Convert to fraction form
    319,200.60/440,499.90 = 175,965.80/x
  3. Step 3: Cross multiply
    319,200.60x = 440,499.90 × 175,965.80
  4. Step 4: Simplify right side
    319,200.60x = 77,512,917,303.42
  5. Step 5: Solve for x
    x = 77,512,917,303.42/319,200.60
  6. Step 6: Final answer
    x = 242,834.50

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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.