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Finding the Fourth Proportional to 618,657.36, 853,807.08 and 346,771.44

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Solution

The fourth proportional to 618,657.36, 853,807.08 and 346,771.44 is: 478,578.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,657.36 : 853,807.08 = 346,771.44 : x
  2. Step 2: Convert to fraction form
    618,657.36/853,807.08 = 346,771.44/x
  3. Step 3: Cross multiply
    618,657.36x = 853,807.08 × 346,771.44
  4. Step 4: Simplify right side
    618,657.36x = 296,075,910,613.80
  5. Step 5: Solve for x
    x = 296,075,910,613.80/618,657.36
  6. Step 6: Final answer
    x = 478,578.18

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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.