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Finding the Fourth Proportional to 417,834.16, 626,671.08 and 118,242.40

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Solution

The fourth proportional to 417,834.16, 626,671.08 and 118,242.40 is: 177,340.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,834.16 : 626,671.08 = 118,242.40 : x
  2. Step 2: Convert to fraction form
    417,834.16/626,671.08 = 118,242.40/x
  3. Step 3: Cross multiply
    417,834.16x = 626,671.08 × 118,242.40
  4. Step 4: Simplify right side
    417,834.16x = 74,099,092,509.79
  5. Step 5: Solve for x
    x = 74,099,092,509.79/417,834.16
  6. Step 6: Final answer
    x = 177,340.92

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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.