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Finding the Fourth Proportional to 640,066.08, 883,285.92 and 353,580.15

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Solution

The fourth proportional to 640,066.08, 883,285.92 and 353,580.15 is: 487,937.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,066.08 : 883,285.92 = 353,580.15 : x
  2. Step 2: Convert to fraction form
    640,066.08/883,285.92 = 353,580.15/x
  3. Step 3: Cross multiply
    640,066.08x = 883,285.92 × 353,580.15
  4. Step 4: Simplify right side
    640,066.08x = 312,312,368,086.49
  5. Step 5: Solve for x
    x = 312,312,368,086.49/640,066.08
  6. Step 6: Final answer
    x = 487,937.70

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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.