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Finding the Fourth Proportional to 398,566.60, 597,644.70 and 118,047.40

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Solution

The fourth proportional to 398,566.60, 597,644.70 and 118,047.40 is: 177,010.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,566.60 : 597,644.70 = 118,047.40 : x
  2. Step 2: Convert to fraction form
    398,566.60/597,644.70 = 118,047.40/x
  3. Step 3: Cross multiply
    398,566.60x = 597,644.70 × 118,047.40
  4. Step 4: Simplify right side
    398,566.60x = 70,550,402,958.78
  5. Step 5: Solve for x
    x = 70,550,402,958.78/398,566.60
  6. Step 6: Final answer
    x = 177,010.32

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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.