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Finding the Fourth Proportional to 406,124.40, 609,244.20 and 125,612.40

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Solution

The fourth proportional to 406,124.40, 609,244.20 and 125,612.40 is: 188,436.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,124.40 : 609,244.20 = 125,612.40 : x
  2. Step 2: Convert to fraction form
    406,124.40/609,244.20 = 125,612.40/x
  3. Step 3: Cross multiply
    406,124.40x = 609,244.20 × 125,612.40
  4. Step 4: Simplify right side
    406,124.40x = 76,528,626,148.08
  5. Step 5: Solve for x
    x = 76,528,626,148.08/406,124.40
  6. Step 6: Final answer
    x = 188,436.42

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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.