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Finding the Fourth Proportional to 354,616.11, 489,353.13 and 193,461.57

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Solution

The fourth proportional to 354,616.11, 489,353.13 and 193,461.57 is: 266,967.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,616.11 : 489,353.13 = 193,461.57 : x
  2. Step 2: Convert to fraction form
    354,616.11/489,353.13 = 193,461.57/x
  3. Step 3: Cross multiply
    354,616.11x = 489,353.13 × 193,461.57
  4. Step 4: Simplify right side
    354,616.11x = 94,671,024,814.21
  5. Step 5: Solve for x
    x = 94,671,024,814.21/354,616.11
  6. Step 6: Final answer
    x = 266,967.64

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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.