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Finding the Fourth Proportional to 403,503.69, 556,813.76 and 231,412.75

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Solution

The fourth proportional to 403,503.69, 556,813.76 and 231,412.75 is: 319,337.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,503.69 : 556,813.76 = 231,412.75 : x
  2. Step 2: Convert to fraction form
    403,503.69/556,813.76 = 231,412.75/x
  3. Step 3: Cross multiply
    403,503.69x = 556,813.76 × 231,412.75
  4. Step 4: Simplify right side
    403,503.69x = 128,853,802,282.38
  5. Step 5: Solve for x
    x = 128,853,802,282.38/403,503.69
  6. Step 6: Final answer
    x = 319,337.36

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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.