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Finding the Fourth Proportional to 354,638.04, 489,398.68 and 193,492.56

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Solution

The fourth proportional to 354,638.04, 489,398.68 and 193,492.56 is: 267,018.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,638.04 : 489,398.68 = 193,492.56 : x
  2. Step 2: Convert to fraction form
    354,638.04/489,398.68 = 193,492.56/x
  3. Step 3: Cross multiply
    354,638.04x = 489,398.68 × 193,492.56
  4. Step 4: Simplify right side
    354,638.04x = 94,695,003,453.82
  5. Step 5: Solve for x
    x = 94,695,003,453.82/354,638.04
  6. Step 6: Final answer
    x = 267,018.74

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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.