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Finding the Fourth Proportional to 666,493.77, 919,757.55 and 360,569.19

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Solution

The fourth proportional to 666,493.77, 919,757.55 and 360,569.19 is: 497,583.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,493.77 : 919,757.55 = 360,569.19 : x
  2. Step 2: Convert to fraction form
    666,493.77/919,757.55 = 360,569.19/x
  3. Step 3: Cross multiply
    666,493.77x = 919,757.55 × 360,569.19
  4. Step 4: Simplify right side
    666,493.77x = 331,636,234,799.89
  5. Step 5: Solve for x
    x = 331,636,234,799.89/666,493.77
  6. Step 6: Final answer
    x = 497,583.40

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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.