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Finding the Fourth Proportional to 641,287.36, 884,817.28 and 414,660.16

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Solution

The fourth proportional to 641,287.36, 884,817.28 and 414,660.16 is: 572,128.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,287.36 : 884,817.28 = 414,660.16 : x
  2. Step 2: Convert to fraction form
    641,287.36/884,817.28 = 414,660.16/x
  3. Step 3: Cross multiply
    641,287.36x = 884,817.28 × 414,660.16
  4. Step 4: Simplify right side
    641,287.36x = 366,898,474,895.57
  5. Step 5: Solve for x
    x = 366,898,474,895.57/641,287.36
  6. Step 6: Final answer
    x = 572,128.03

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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.