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Finding the Fourth Proportional to 118,492.45, 163,521.53 and 70,749.97

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Solution

The fourth proportional to 118,492.45, 163,521.53 and 70,749.97 is: 97,636.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,492.45 : 163,521.53 = 70,749.97 : x
  2. Step 2: Convert to fraction form
    118,492.45/163,521.53 = 70,749.97/x
  3. Step 3: Cross multiply
    118,492.45x = 163,521.53 × 70,749.97
  4. Step 4: Simplify right side
    118,492.45x = 11,569,142,988.10
  5. Step 5: Solve for x
    x = 11,569,142,988.10/118,492.45
  6. Step 6: Final answer
    x = 97,636.12

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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.