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Finding the Fourth Proportional to 625,568.40, 939,043.80 and 345,632.40

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Solution

The fourth proportional to 625,568.40, 939,043.80 and 345,632.40 is: 518,830.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,568.40 : 939,043.80 = 345,632.40 : x
  2. Step 2: Convert to fraction form
    625,568.40/939,043.80 = 345,632.40/x
  3. Step 3: Cross multiply
    625,568.40x = 939,043.80 × 345,632.40
  4. Step 4: Simplify right side
    625,568.40x = 324,563,962,299.12
  5. Step 5: Solve for x
    x = 324,563,962,299.12/625,568.40
  6. Step 6: Final answer
    x = 518,830.49

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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.