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Finding the Fourth Proportional to 649,707.12, 896,706.54 and 377,932.59

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Solution

The fourth proportional to 649,707.12, 896,706.54 and 377,932.59 is: 521,611.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,707.12 : 896,706.54 = 377,932.59 : x
  2. Step 2: Convert to fraction form
    649,707.12/896,706.54 = 377,932.59/x
  3. Step 3: Cross multiply
    649,707.12x = 896,706.54 × 377,932.59
  4. Step 4: Simplify right side
    649,707.12x = 338,894,625,132.14
  5. Step 5: Solve for x
    x = 338,894,625,132.14/649,707.12
  6. Step 6: Final answer
    x = 521,611.38

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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.