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Finding the Fourth Proportional to 289,668.32, 399,741.36 and 168,881.12

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Solution

The fourth proportional to 289,668.32, 399,741.36 and 168,881.12 is: 233,055.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,668.32 : 399,741.36 = 168,881.12 : x
  2. Step 2: Convert to fraction form
    289,668.32/399,741.36 = 168,881.12/x
  3. Step 3: Cross multiply
    289,668.32x = 399,741.36 × 168,881.12
  4. Step 4: Simplify right side
    289,668.32x = 67,508,768,587.12
  5. Step 5: Solve for x
    x = 67,508,768,587.12/289,668.32
  6. Step 6: Final answer
    x = 233,055.41

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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.