Home / 415,514.18-623,271.27-99,971.09

Finding the Fourth Proportional to 415,514.18, 623,271.27 and 99,971.09

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Solution

The fourth proportional to 415,514.18, 623,271.27 and 99,971.09 is: 149,956.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,514.18 : 623,271.27 = 99,971.09 : x
  2. Step 2: Convert to fraction form
    415,514.18/623,271.27 = 99,971.09/x
  3. Step 3: Cross multiply
    415,514.18x = 623,271.27 × 99,971.09
  4. Step 4: Simplify right side
    415,514.18x = 62,309,108,227.58
  5. Step 5: Solve for x
    x = 62,309,108,227.58/415,514.18
  6. Step 6: Final answer
    x = 149,956.64

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Double scale
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Similar ratio
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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.