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Finding the Fourth Proportional to 626,681.80, 939,983.82 and 200,207.08

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Solution

The fourth proportional to 626,681.80, 939,983.82 and 200,207.08 is: 300,298.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,681.80 : 939,983.82 = 200,207.08 : x
  2. Step 2: Convert to fraction form
    626,681.80/939,983.82 = 200,207.08/x
  3. Step 3: Cross multiply
    626,681.80x = 939,983.82 × 200,207.08
  4. Step 4: Simplify right side
    626,681.80x = 188,191,415,849.45
  5. Step 5: Solve for x
    x = 188,191,415,849.45/626,681.80
  6. Step 6: Final answer
    x = 300,298.20

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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.