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Finding the Fourth Proportional to 289,453.48, 399,458.10 and 168,575.32

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Solution

The fourth proportional to 289,453.48, 399,458.10 and 168,575.32 is: 232,641.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,453.48 : 399,458.10 = 168,575.32 : x
  2. Step 2: Convert to fraction form
    289,453.48/399,458.10 = 168,575.32/x
  3. Step 3: Cross multiply
    289,453.48x = 399,458.10 × 168,575.32
  4. Step 4: Simplify right side
    289,453.48x = 67,338,777,034.09
  5. Step 5: Solve for x
    x = 67,338,777,034.09/289,453.48
  6. Step 6: Final answer
    x = 232,641.10

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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.