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Finding the Fourth Proportional to 328,419.37, 453,223.74 and 192,420.76

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Solution

The fourth proportional to 328,419.37, 453,223.74 and 192,420.76 is: 265,543.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,419.37 : 453,223.74 = 192,420.76 : x
  2. Step 2: Convert to fraction form
    328,419.37/453,223.74 = 192,420.76/x
  3. Step 3: Cross multiply
    328,419.37x = 453,223.74 × 192,420.76
  4. Step 4: Simplify right side
    328,419.37x = 87,209,656,500.84
  5. Step 5: Solve for x
    x = 87,209,656,500.84/328,419.37
  6. Step 6: Final answer
    x = 265,543.58

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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.