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Finding the Fourth Proportional to 328,903.20, 453,886.44 and 178,000.20

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Solution

The fourth proportional to 328,903.20, 453,886.44 and 178,000.20 is: 245,640.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,903.20 : 453,886.44 = 178,000.20 : x
  2. Step 2: Convert to fraction form
    328,903.20/453,886.44 = 178,000.20/x
  3. Step 3: Cross multiply
    328,903.20x = 453,886.44 × 178,000.20
  4. Step 4: Simplify right side
    328,903.20x = 80,791,877,097.29
  5. Step 5: Solve for x
    x = 80,791,877,097.29/328,903.20
  6. Step 6: Final answer
    x = 245,640.29

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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.