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Finding the Fourth Proportional to 633,661.39, 874,419.28 and 361,718.47

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Solution

The fourth proportional to 633,661.39, 874,419.28 and 361,718.47 is: 499,152.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,661.39 : 874,419.28 = 361,718.47 : x
  2. Step 2: Convert to fraction form
    633,661.39/874,419.28 = 361,718.47/x
  3. Step 3: Cross multiply
    633,661.39x = 874,419.28 × 361,718.47
  4. Step 4: Simplify right side
    633,661.39x = 316,293,604,288.83
  5. Step 5: Solve for x
    x = 316,293,604,288.83/633,661.39
  6. Step 6: Final answer
    x = 499,152.40

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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.