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Finding the Fourth Proportional to 661,606.20, 992,409.30 and 635,801.40

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Solution

The fourth proportional to 661,606.20, 992,409.30 and 635,801.40 is: 953,702.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,606.20 : 992,409.30 = 635,801.40 : x
  2. Step 2: Convert to fraction form
    661,606.20/992,409.30 = 635,801.40/x
  3. Step 3: Cross multiply
    661,606.20x = 992,409.30 × 635,801.40
  4. Step 4: Simplify right side
    661,606.20x = 630,975,222,313.02
  5. Step 5: Solve for x
    x = 630,975,222,313.02/661,606.20
  6. Step 6: Final answer
    x = 953,702.10

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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.