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Finding the Fourth Proportional to 118,881.49, 178,320.43 and 28,925.05

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Solution

The fourth proportional to 118,881.49, 178,320.43 and 28,925.05 is: 43,387.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,881.49 : 178,320.43 = 28,925.05 : x
  2. Step 2: Convert to fraction form
    118,881.49/178,320.43 = 28,925.05/x
  3. Step 3: Cross multiply
    118,881.49x = 178,320.43 × 28,925.05
  4. Step 4: Simplify right side
    118,881.49x = 5,157,927,353.77
  5. Step 5: Solve for x
    x = 5,157,927,353.77/118,881.49
  6. Step 6: Final answer
    x = 43,387.14

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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.