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Finding the Fourth Proportional to 218,951.61, 302,153.02 and 118,349.61

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Solution

The fourth proportional to 218,951.61, 302,153.02 and 118,349.61 is: 163,322.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,951.61 : 302,153.02 = 118,349.61 : x
  2. Step 2: Convert to fraction form
    218,951.61/302,153.02 = 118,349.61/x
  3. Step 3: Cross multiply
    218,951.61x = 302,153.02 × 118,349.61
  4. Step 4: Simplify right side
    218,951.61x = 35,759,692,077.32
  5. Step 5: Solve for x
    x = 35,759,692,077.32/218,951.61
  6. Step 6: Final answer
    x = 163,322.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.