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Finding the Fourth Proportional to 405,637.76, 608,186.35 and 223,354.40

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Solution

The fourth proportional to 405,637.76, 608,186.35 and 223,354.40 is: 334,882.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,637.76 : 608,186.35 = 223,354.40 : x
  2. Step 2: Convert to fraction form
    405,637.76/608,186.35 = 223,354.40/x
  3. Step 3: Cross multiply
    405,637.76x = 608,186.35 × 223,354.40
  4. Step 4: Simplify right side
    405,637.76x = 135,841,093,902.52
  5. Step 5: Solve for x
    x = 135,841,093,902.52/405,637.76
  6. Step 6: Final answer
    x = 334,882.77

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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.