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Finding the Fourth Proportional to 354,135.81, 488,695.01 and 192,987.57

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Solution

The fourth proportional to 354,135.81, 488,695.01 and 192,987.57 is: 266,316.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,135.81 : 488,695.01 = 192,987.57 : x
  2. Step 2: Convert to fraction form
    354,135.81/488,695.01 = 192,987.57/x
  3. Step 3: Cross multiply
    354,135.81x = 488,695.01 × 192,987.57
  4. Step 4: Simplify right side
    354,135.81x = 94,312,061,486.09
  5. Step 5: Solve for x
    x = 94,312,061,486.09/354,135.81
  6. Step 6: Final answer
    x = 266,316.08

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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.