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Finding the Fourth Proportional to 641,178.33, 884,852.15 and 354,693.48

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Solution

The fourth proportional to 641,178.33, 884,852.15 and 354,693.48 is: 489,491.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,178.33 : 884,852.15 = 354,693.48 : x
  2. Step 2: Convert to fraction form
    641,178.33/884,852.15 = 354,693.48/x
  3. Step 3: Cross multiply
    641,178.33x = 884,852.15 × 354,693.48
  4. Step 4: Simplify right side
    641,178.33x = 313,851,286,595.52
  5. Step 5: Solve for x
    x = 313,851,286,595.52/641,178.33
  6. Step 6: Final answer
    x = 489,491.41

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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.