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Finding the Fourth Proportional to 679,065.64, 937,055.74 and 392,604.18

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Solution

The fourth proportional to 679,065.64, 937,055.74 and 392,604.18 is: 541,762.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,065.64 : 937,055.74 = 392,604.18 : x
  2. Step 2: Convert to fraction form
    679,065.64/937,055.74 = 392,604.18/x
  3. Step 3: Cross multiply
    679,065.64x = 937,055.74 × 392,604.18
  4. Step 4: Simplify right side
    679,065.64x = 367,892,001,928.60
  5. Step 5: Solve for x
    x = 367,892,001,928.60/679,065.64
  6. Step 6: Final answer
    x = 541,762.06

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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.