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Finding the Fourth Proportional to 145,211,782.40, 203,447,660.80 and 145,211,782.40

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Solution

The fourth proportional to 145,211,782.40, 203,447,660.80 and 145,211,782.40 is: 203,447,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,211,782.40 : 203,447,660.80 = 145,211,782.40 : x
  2. Step 2: Convert to fraction form
    145,211,782.40/203,447,660.80 = 145,211,782.40/x
  3. Step 3: Cross multiply
    145,211,782.40x = 203,447,660.80 × 145,211,782.40
  4. Step 4: Simplify right side
    145,211,782.40x = 29,542,997,449,878,612
  5. Step 5: Solve for x
    x = 29,542,997,449,878,612/145,211,782.40
  6. Step 6: Final answer
    x = 203,447,660.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.