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Finding the Fourth Proportional to 317,877.40, 438,672.18 and 174,640.60

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Solution

The fourth proportional to 317,877.40, 438,672.18 and 174,640.60 is: 241,004.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,877.40 : 438,672.18 = 174,640.60 : x
  2. Step 2: Convert to fraction form
    317,877.40/438,672.18 = 174,640.60/x
  3. Step 3: Cross multiply
    317,877.40x = 438,672.18 × 174,640.60
  4. Step 4: Simplify right side
    317,877.40x = 76,609,972,718.51
  5. Step 5: Solve for x
    x = 76,609,972,718.51/317,877.40
  6. Step 6: Final answer
    x = 241,004.78

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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.