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Finding the Fourth Proportional to 518,058.60, 714,920.22 and 291,705.72

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Solution

The fourth proportional to 518,058.60, 714,920.22 and 291,705.72 is: 402,553.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,058.60 : 714,920.22 = 291,705.72 : x
  2. Step 2: Convert to fraction form
    518,058.60/714,920.22 = 291,705.72/x
  3. Step 3: Cross multiply
    518,058.60x = 714,920.22 × 291,705.72
  4. Step 4: Simplify right side
    518,058.60x = 208,546,317,517.66
  5. Step 5: Solve for x
    x = 208,546,317,517.66/518,058.60
  6. Step 6: Final answer
    x = 402,553.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.