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Finding the Fourth Proportional to 639,864.96, 883,019.69 and 364,209.35

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Solution

The fourth proportional to 639,864.96, 883,019.69 and 364,209.35 is: 502,612.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,864.96 : 883,019.69 = 364,209.35 : x
  2. Step 2: Convert to fraction form
    639,864.96/883,019.69 = 364,209.35/x
  3. Step 3: Cross multiply
    639,864.96x = 883,019.69 × 364,209.35
  4. Step 4: Simplify right side
    639,864.96x = 321,604,027,332.10
  5. Step 5: Solve for x
    x = 321,604,027,332.10/639,864.96
  6. Step 6: Final answer
    x = 502,612.34

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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.