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Finding the Fourth Proportional to 318,214.71, 439,133.00 and 236,906.51

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Solution

The fourth proportional to 318,214.71, 439,133.00 and 236,906.51 is: 326,928.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,214.71 : 439,133.00 = 236,906.51 : x
  2. Step 2: Convert to fraction form
    318,214.71/439,133.00 = 236,906.51/x
  3. Step 3: Cross multiply
    318,214.71x = 439,133.00 × 236,906.51
  4. Step 4: Simplify right side
    318,214.71x = 104,033,463,075.63
  5. Step 5: Solve for x
    x = 104,033,463,075.63/318,214.71
  6. Step 6: Final answer
    x = 326,928.52

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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.