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Finding the Fourth Proportional to 630,153.97, 869,462.97 and 358,200.52

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Solution

The fourth proportional to 630,153.97, 869,462.97 and 358,200.52 is: 494,231.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,153.97 : 869,462.97 = 358,200.52 : x
  2. Step 2: Convert to fraction form
    630,153.97/869,462.97 = 358,200.52/x
  3. Step 3: Cross multiply
    630,153.97x = 869,462.97 × 358,200.52
  4. Step 4: Simplify right side
    630,153.97x = 311,442,087,974.74
  5. Step 5: Solve for x
    x = 311,442,087,974.74/630,153.97
  6. Step 6: Final answer
    x = 494,231.73

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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.