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Finding the Fourth Proportional to 398,603.70, 597,803.36 and 118,055.34

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Solution

The fourth proportional to 398,603.70, 597,803.36 and 118,055.34 is: 177,052.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,603.70 : 597,803.36 = 118,055.34 : x
  2. Step 2: Convert to fraction form
    398,603.70/597,803.36 = 118,055.34/x
  3. Step 3: Cross multiply
    398,603.70x = 597,803.36 × 118,055.34
  4. Step 4: Simplify right side
    398,603.70x = 70,573,878,327.67
  5. Step 5: Solve for x
    x = 70,573,878,327.67/398,603.70
  6. Step 6: Final answer
    x = 177,052.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.