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Finding the Fourth Proportional to 618,849.40, 853,948.02 and 364,185.40

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Solution

The fourth proportional to 618,849.40, 853,948.02 and 364,185.40 is: 502,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,849.40 : 853,948.02 = 364,185.40 : x
  2. Step 2: Convert to fraction form
    618,849.40/853,948.02 = 364,185.40/x
  3. Step 3: Cross multiply
    618,849.40x = 853,948.02 × 364,185.40
  4. Step 4: Simplify right side
    618,849.40x = 310,995,401,242.91
  5. Step 5: Solve for x
    x = 310,995,401,242.91/618,849.40
  6. Step 6: Final answer
    x = 502,538.10

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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.