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Finding the Fourth Proportional to 118,805.40, 163,946.52 and 71,030.52

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Solution

The fourth proportional to 118,805.40, 163,946.52 and 71,030.52 is: 98,019.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,805.40 : 163,946.52 = 71,030.52 : x
  2. Step 2: Convert to fraction form
    118,805.40/163,946.52 = 71,030.52/x
  3. Step 3: Cross multiply
    118,805.40x = 163,946.52 × 71,030.52
  4. Step 4: Simplify right side
    118,805.40x = 11,645,206,567.79
  5. Step 5: Solve for x
    x = 11,645,206,567.79/118,805.40
  6. Step 6: Final answer
    x = 98,019.17

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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.