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Finding the Fourth Proportional to 411,958.80, 616,771.80 and 369,968.40

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Solution

The fourth proportional to 411,958.80, 616,771.80 and 369,968.40 is: 553,905.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,958.80 : 616,771.80 = 369,968.40 : x
  2. Step 2: Convert to fraction form
    411,958.80/616,771.80 = 369,968.40/x
  3. Step 3: Cross multiply
    411,958.80x = 616,771.80 × 369,968.40
  4. Step 4: Simplify right side
    411,958.80x = 228,186,076,011.12
  5. Step 5: Solve for x
    x = 228,186,076,011.12/411,958.80
  6. Step 6: Final answer
    x = 553,905.09

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1.5x scale

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.