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Finding the Fourth Proportional to 545,936.40, 818,904.60 and 190,913.40

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Solution

The fourth proportional to 545,936.40, 818,904.60 and 190,913.40 is: 286,370.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,936.40 : 818,904.60 = 190,913.40 : x
  2. Step 2: Convert to fraction form
    545,936.40/818,904.60 = 190,913.40/x
  3. Step 3: Cross multiply
    545,936.40x = 818,904.60 × 190,913.40
  4. Step 4: Simplify right side
    545,936.40x = 156,339,861,461.64
  5. Step 5: Solve for x
    x = 156,339,861,461.64/545,936.40
  6. Step 6: Final answer
    x = 286,370.10

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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.