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Finding the Fourth Proportional to 604,851.70, 907,277.55 and 427,704.70

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Solution

The fourth proportional to 604,851.70, 907,277.55 and 427,704.70 is: 641,557.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,851.70 : 907,277.55 = 427,704.70 : x
  2. Step 2: Convert to fraction form
    604,851.70/907,277.55 = 427,704.70/x
  3. Step 3: Cross multiply
    604,851.70x = 907,277.55 × 427,704.70
  4. Step 4: Simplify right side
    604,851.70x = 388,046,872,339.49
  5. Step 5: Solve for x
    x = 388,046,872,339.49/604,851.70
  6. Step 6: Final answer
    x = 641,557.05

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.