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Finding the Fourth Proportional to 478,107.58, 716,994.06 and 141,058.66

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Solution

The fourth proportional to 478,107.58, 716,994.06 and 141,058.66 is: 211,538.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,107.58 : 716,994.06 = 141,058.66 : x
  2. Step 2: Convert to fraction form
    478,107.58/716,994.06 = 141,058.66/x
  3. Step 3: Cross multiply
    478,107.58x = 716,994.06 × 141,058.66
  4. Step 4: Simplify right side
    478,107.58x = 101,138,221,331.56
  5. Step 5: Solve for x
    x = 101,138,221,331.56/478,107.58
  6. Step 6: Final answer
    x = 211,538.63

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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.