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Finding the Fourth Proportional to 423,444.30, 584,350.50 and 229,855.80

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Solution

The fourth proportional to 423,444.30, 584,350.50 and 229,855.80 is: 317,199.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,444.30 : 584,350.50 = 229,855.80 : x
  2. Step 2: Convert to fraction form
    423,444.30/584,350.50 = 229,855.80/x
  3. Step 3: Cross multiply
    423,444.30x = 584,350.50 × 229,855.80
  4. Step 4: Simplify right side
    423,444.30x = 134,316,351,657.90
  5. Step 5: Solve for x
    x = 134,316,351,657.90/423,444.30
  6. Step 6: Final answer
    x = 317,199.57

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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.