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Finding the Fourth Proportional to 432,658.20, 596,224.80 and 311,570.70

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Solution

The fourth proportional to 432,658.20, 596,224.80 and 311,570.70 is: 429,360.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,658.20 : 596,224.80 = 311,570.70 : x
  2. Step 2: Convert to fraction form
    432,658.20/596,224.80 = 311,570.70/x
  3. Step 3: Cross multiply
    432,658.20x = 596,224.80 × 311,570.70
  4. Step 4: Simplify right side
    432,658.20x = 185,766,178,293.36
  5. Step 5: Solve for x
    x = 185,766,178,293.36/432,658.20
  6. Step 6: Final answer
    x = 429,360.12

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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.