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Finding the Fourth Proportional to 640,219.05, 883,500.47 and 353,737.08

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Solution

The fourth proportional to 640,219.05, 883,500.47 and 353,737.08 is: 488,156.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,219.05 : 883,500.47 = 353,737.08 : x
  2. Step 2: Convert to fraction form
    640,219.05/883,500.47 = 353,737.08/x
  3. Step 3: Cross multiply
    640,219.05x = 883,500.47 × 353,737.08
  4. Step 4: Simplify right side
    640,219.05x = 312,526,874,667.74
  5. Step 5: Solve for x
    x = 312,526,874,667.74/640,219.05
  6. Step 6: Final answer
    x = 488,156.16

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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.