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Finding the Fourth Proportional to 319,312.60, 440,654.46 and 176,077.72

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Solution

The fourth proportional to 319,312.60, 440,654.46 and 176,077.72 is: 242,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,312.60 : 440,654.46 = 176,077.72 : x
  2. Step 2: Convert to fraction form
    319,312.60/440,654.46 = 176,077.72/x
  3. Step 3: Cross multiply
    319,312.60x = 440,654.46 × 176,077.72
  4. Step 4: Simplify right side
    319,312.60x = 77,589,432,624.63
  5. Step 5: Solve for x
    x = 77,589,432,624.63/319,312.60
  6. Step 6: Final answer
    x = 242,988.95

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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.