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Finding the Fourth Proportional to 638,327.70, 880,733.25 and 411,700.50

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Solution

The fourth proportional to 638,327.70, 880,733.25 and 411,700.50 is: 568,044.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,327.70 : 880,733.25 = 411,700.50 : x
  2. Step 2: Convert to fraction form
    638,327.70/880,733.25 = 411,700.50/x
  3. Step 3: Cross multiply
    638,327.70x = 880,733.25 × 411,700.50
  4. Step 4: Simplify right side
    638,327.70x = 362,598,319,391.63
  5. Step 5: Solve for x
    x = 362,598,319,391.63/638,327.70
  6. Step 6: Final answer
    x = 568,044.16

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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.