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Finding the Fourth Proportional to 118,981.95, 178,354.65 and 59,636.49

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Solution

The fourth proportional to 118,981.95, 178,354.65 and 59,636.49 is: 89,395.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,981.95 : 178,354.65 = 59,636.49 : x
  2. Step 2: Convert to fraction form
    118,981.95/178,354.65 = 59,636.49/x
  3. Step 3: Cross multiply
    118,981.95x = 178,354.65 × 59,636.49
  4. Step 4: Simplify right side
    118,981.95x = 10,636,445,301.18
  5. Step 5: Solve for x
    x = 10,636,445,301.18/118,981.95
  6. Step 6: Final answer
    x = 89,395.45

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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.