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Finding the Fourth Proportional to 926,936.40, 1,390,404.60 and 926,936.40

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Solution

The fourth proportional to 926,936.40, 1,390,404.60 and 926,936.40 is: 1,390,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,936.40 : 1,390,404.60 = 926,936.40 : x
  2. Step 2: Convert to fraction form
    926,936.40/1,390,404.60 = 926,936.40/x
  3. Step 3: Cross multiply
    926,936.40x = 1,390,404.60 × 926,936.40
  4. Step 4: Simplify right side
    926,936.40x = 1,288,816,634,467.44
  5. Step 5: Solve for x
    x = 1,288,816,634,467.44/926,936.40
  6. Step 6: Final answer
    x = 1,390,404.60

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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.