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Finding the Fourth Proportional to 358,473.20, 494,707.10 and 197,343.23

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Solution

The fourth proportional to 358,473.20, 494,707.10 and 197,343.23 is: 272,341.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,473.20 : 494,707.10 = 197,343.23 : x
  2. Step 2: Convert to fraction form
    358,473.20/494,707.10 = 197,343.23/x
  3. Step 3: Cross multiply
    358,473.20x = 494,707.10 × 197,343.23
  4. Step 4: Simplify right side
    358,473.20x = 97,627,093,557.68
  5. Step 5: Solve for x
    x = 97,627,093,557.68/358,473.20
  6. Step 6: Final answer
    x = 272,341.40

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Half scale
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Double scale
Find fourth proportional to 358,474.20, 494,708.48 and 197,344.23
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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.