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Finding the Fourth Proportional to 618,797.53, 853,980.06 and 346,865.55

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Solution

The fourth proportional to 618,797.53, 853,980.06 and 346,865.55 is: 478,696.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,797.53 : 853,980.06 = 346,865.55 : x
  2. Step 2: Convert to fraction form
    618,797.53/853,980.06 = 346,865.55/x
  3. Step 3: Cross multiply
    618,797.53x = 853,980.06 × 346,865.55
  4. Step 4: Simplify right side
    618,797.53x = 296,216,263,200.93
  5. Step 5: Solve for x
    x = 296,216,263,200.93/618,797.53
  6. Step 6: Final answer
    x = 478,696.58

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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.