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Finding the Fourth Proportional to 677,945.82, 935,333.51 and 387,348.88

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Solution

The fourth proportional to 677,945.82, 935,333.51 and 387,348.88 is: 534,409.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,945.82 : 935,333.51 = 387,348.88 : x
  2. Step 2: Convert to fraction form
    677,945.82/935,333.51 = 387,348.88/x
  3. Step 3: Cross multiply
    677,945.82x = 935,333.51 × 387,348.88
  4. Step 4: Simplify right side
    677,945.82x = 362,300,386,863.66
  5. Step 5: Solve for x
    x = 362,300,386,863.66/677,945.82
  6. Step 6: Final answer
    x = 534,409.06

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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.