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Finding the Fourth Proportional to 607,978.76, 912,066.14 and 187,254.44

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Solution

The fourth proportional to 607,978.76, 912,066.14 and 187,254.44 is: 280,911.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,978.76 : 912,066.14 = 187,254.44 : x
  2. Step 2: Convert to fraction form
    607,978.76/912,066.14 = 187,254.44/x
  3. Step 3: Cross multiply
    607,978.76x = 912,066.14 × 187,254.44
  4. Step 4: Simplify right side
    607,978.76x = 170,788,434,288.66
  5. Step 5: Solve for x
    x = 170,788,434,288.66/607,978.76
  6. Step 6: Final answer
    x = 280,911.84

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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.