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Finding the Fourth Proportional to 657,569.69, 986,403.94 and 208,325.87

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Solution

The fourth proportional to 657,569.69, 986,403.94 and 208,325.87 is: 312,504.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,569.69 : 986,403.94 = 208,325.87 : x
  2. Step 2: Convert to fraction form
    657,569.69/986,403.94 = 208,325.87/x
  3. Step 3: Cross multiply
    657,569.69x = 986,403.94 × 208,325.87
  4. Step 4: Simplify right side
    657,569.69x = 205,493,453,519.09
  5. Step 5: Solve for x
    x = 205,493,453,519.09/657,569.69
  6. Step 6: Final answer
    x = 312,504.45

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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.