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Finding the Fourth Proportional to 319,304.02, 440,639.10 and 176,064.40

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Solution

The fourth proportional to 319,304.02, 440,639.10 and 176,064.40 is: 242,968.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,304.02 : 440,639.10 = 176,064.40 : x
  2. Step 2: Convert to fraction form
    319,304.02/440,639.10 = 176,064.40/x
  3. Step 3: Cross multiply
    319,304.02x = 440,639.10 × 176,064.40
  4. Step 4: Simplify right side
    319,304.02x = 77,580,858,758.04
  5. Step 5: Solve for x
    x = 77,580,858,758.04/319,304.02
  6. Step 6: Final answer
    x = 242,968.63

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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.