Home / 395,109.40-592,664.10-99,621.40

Finding the Fourth Proportional to 395,109.40, 592,664.10 and 99,621.40

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Solution

The fourth proportional to 395,109.40, 592,664.10 and 99,621.40 is: 149,432.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,109.40 : 592,664.10 = 99,621.40 : x
  2. Step 2: Convert to fraction form
    395,109.40/592,664.10 = 99,621.40/x
  3. Step 3: Cross multiply
    395,109.40x = 592,664.10 × 99,621.40
  4. Step 4: Simplify right side
    395,109.40x = 59,042,027,371.74
  5. Step 5: Solve for x
    x = 59,042,027,371.74/395,109.40
  6. Step 6: Final answer
    x = 149,432.10

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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.