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Finding the Fourth Proportional to 638,090.22, 957,153.88 and 238,654.76

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Solution

The fourth proportional to 638,090.22, 957,153.88 and 238,654.76 is: 357,989.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,090.22 : 957,153.88 = 238,654.76 : x
  2. Step 2: Convert to fraction form
    638,090.22/957,153.88 = 238,654.76/x
  3. Step 3: Cross multiply
    638,090.22x = 957,153.88 × 238,654.76
  4. Step 4: Simplify right side
    638,090.22x = 228,429,329,514.47
  5. Step 5: Solve for x
    x = 228,429,329,514.47/638,090.22
  6. Step 6: Final answer
    x = 357,989.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.