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Finding the Fourth Proportional to 328,618.12, 453,492.78 and 177,715.12

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Solution

The fourth proportional to 328,618.12, 453,492.78 and 177,715.12 is: 245,246.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,618.12 : 453,492.78 = 177,715.12 : x
  2. Step 2: Convert to fraction form
    328,618.12/453,492.78 = 177,715.12/x
  3. Step 3: Cross multiply
    328,618.12x = 453,492.78 × 177,715.12
  4. Step 4: Simplify right side
    328,618.12x = 80,592,523,816.83
  5. Step 5: Solve for x
    x = 80,592,523,816.83/328,618.12
  6. Step 6: Final answer
    x = 245,246.74

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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.