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Finding the Fourth Proportional to 430,883.96, 646,396.00 and 127,308.92

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Solution

The fourth proportional to 430,883.96, 646,396.00 and 127,308.92 is: 190,984.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,883.96 : 646,396.00 = 127,308.92 : x
  2. Step 2: Convert to fraction form
    430,883.96/646,396.00 = 127,308.92/x
  3. Step 3: Cross multiply
    430,883.96x = 646,396.00 × 127,308.92
  4. Step 4: Simplify right side
    430,883.96x = 82,291,973,102.07
  5. Step 5: Solve for x
    x = 82,291,973,102.07/430,883.96
  6. Step 6: Final answer
    x = 190,984.07

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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.