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Finding the Fourth Proportional to 624,153.34, 861,353.76 and 352,287.40

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Solution

The fourth proportional to 624,153.34, 861,353.76 and 352,287.40 is: 486,169.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,153.34 : 861,353.76 = 352,287.40 : x
  2. Step 2: Convert to fraction form
    624,153.34/861,353.76 = 352,287.40/x
  3. Step 3: Cross multiply
    624,153.34x = 861,353.76 × 352,287.40
  4. Step 4: Simplify right side
    624,153.34x = 303,444,076,590.62
  5. Step 5: Solve for x
    x = 303,444,076,590.62/624,153.34
  6. Step 6: Final answer
    x = 486,169.11

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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.