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Finding the Fourth Proportional to 677,883.51, 935,508.56 and 405,995.67

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Solution

The fourth proportional to 677,883.51, 935,508.56 and 405,995.67 is: 560,291.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,883.51 : 935,508.56 = 405,995.67 : x
  2. Step 2: Convert to fraction form
    677,883.51/935,508.56 = 405,995.67/x
  3. Step 3: Cross multiply
    677,883.51x = 935,508.56 × 405,995.67
  4. Step 4: Simplify right side
    677,883.51x = 379,812,422,577.96
  5. Step 5: Solve for x
    x = 379,812,422,577.96/677,883.51
  6. Step 6: Final answer
    x = 560,291.58

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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.