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Finding the Fourth Proportional to 432,406.98, 645,771.51 and 368,546.58

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Solution

The fourth proportional to 432,406.98, 645,771.51 and 368,546.58 is: 550,400.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,406.98 : 645,771.51 = 368,546.58 : x
  2. Step 2: Convert to fraction form
    432,406.98/645,771.51 = 368,546.58/x
  3. Step 3: Cross multiply
    432,406.98x = 645,771.51 × 368,546.58
  4. Step 4: Simplify right side
    432,406.98x = 237,996,881,471.94
  5. Step 5: Solve for x
    x = 237,996,881,471.94/432,406.98
  6. Step 6: Final answer
    x = 550,400.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.