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Finding the Fourth Proportional to 417,720.63, 626,605.10 and 118,176.11

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Solution

The fourth proportional to 417,720.63, 626,605.10 and 118,176.11 is: 177,271.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,720.63 : 626,605.10 = 118,176.11 : x
  2. Step 2: Convert to fraction form
    417,720.63/626,605.10 = 118,176.11/x
  3. Step 3: Cross multiply
    417,720.63x = 626,605.10 × 118,176.11
  4. Step 4: Simplify right side
    417,720.63x = 74,049,755,817.84
  5. Step 5: Solve for x
    x = 74,049,755,817.84/417,720.63
  6. Step 6: Final answer
    x = 177,271.01

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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.