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Finding the Fourth Proportional to 539,438.71, 744,427.00 and 294,425.72

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Solution

The fourth proportional to 539,438.71, 744,427.00 and 294,425.72 is: 406,308.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,438.71 : 744,427.00 = 294,425.72 : x
  2. Step 2: Convert to fraction form
    539,438.71/744,427.00 = 294,425.72/x
  3. Step 3: Cross multiply
    539,438.71x = 744,427.00 × 294,425.72
  4. Step 4: Simplify right side
    539,438.71x = 219,178,455,851.38
  5. Step 5: Solve for x
    x = 219,178,455,851.38/539,438.71
  6. Step 6: Final answer
    x = 406,308.36

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.