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Finding the Fourth Proportional to 417,740.36, 626,643.64 and 118,222.81

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Solution

The fourth proportional to 417,740.36, 626,643.64 and 118,222.81 is: 177,343.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,740.36 : 626,643.64 = 118,222.81 : x
  2. Step 2: Convert to fraction form
    417,740.36/626,643.64 = 118,222.81/x
  3. Step 3: Cross multiply
    417,740.36x = 626,643.64 × 118,222.81
  4. Step 4: Simplify right side
    417,740.36x = 74,083,570,570.60
  5. Step 5: Solve for x
    x = 74,083,570,570.60/417,740.36
  6. Step 6: Final answer
    x = 177,343.58

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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.