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Finding the Fourth Proportional to 553,937.00, 830,905.47 and 427,761.68

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Solution

The fourth proportional to 553,937.00, 830,905.47 and 427,761.68 is: 641,642.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,937.00 : 830,905.47 = 427,761.68 : x
  2. Step 2: Convert to fraction form
    553,937.00/830,905.47 = 427,761.68/x
  3. Step 3: Cross multiply
    553,937.00x = 830,905.47 × 427,761.68
  4. Step 4: Simplify right side
    553,937.00x = 355,429,515,613.86
  5. Step 5: Solve for x
    x = 355,429,515,613.86/553,937.00
  6. Step 6: Final answer
    x = 641,642.50

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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.