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Finding the Fourth Proportional to 302,643.90, 453,929.40 and 125,132.40

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Solution

The fourth proportional to 302,643.90, 453,929.40 and 125,132.40 is: 187,683.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,643.90 : 453,929.40 = 125,132.40 : x
  2. Step 2: Convert to fraction form
    302,643.90/453,929.40 = 125,132.40/x
  3. Step 3: Cross multiply
    302,643.90x = 453,929.40 × 125,132.40
  4. Step 4: Simplify right side
    302,643.90x = 56,801,275,252.56
  5. Step 5: Solve for x
    x = 56,801,275,252.56/302,643.90
  6. Step 6: Final answer
    x = 187,683.53

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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.