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Finding the Fourth Proportional to 607,113.72, 908,415.18 and 381,417.48

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Solution

The fourth proportional to 607,113.72, 908,415.18 and 381,417.48 is: 570,709.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,113.72 : 908,415.18 = 381,417.48 : x
  2. Step 2: Convert to fraction form
    607,113.72/908,415.18 = 381,417.48/x
  3. Step 3: Cross multiply
    607,113.72x = 908,415.18 × 381,417.48
  4. Step 4: Simplify right side
    607,113.72x = 346,485,428,749.35
  5. Step 5: Solve for x
    x = 346,485,428,749.35/607,113.72
  6. Step 6: Final answer
    x = 570,709.27

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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.