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Finding the Fourth Proportional to 628,112.39, 866,752.43 and 341,626.32

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Solution

The fourth proportional to 628,112.39, 866,752.43 and 341,626.32 is: 471,421.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,112.39 : 866,752.43 = 341,626.32 : x
  2. Step 2: Convert to fraction form
    628,112.39/866,752.43 = 341,626.32/x
  3. Step 3: Cross multiply
    628,112.39x = 866,752.43 × 341,626.32
  4. Step 4: Simplify right side
    628,112.39x = 296,105,441,303.83
  5. Step 5: Solve for x
    x = 296,105,441,303.83/628,112.39
  6. Step 6: Final answer
    x = 471,421.12

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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.