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Finding the Fourth Proportional to 118,763.60, 178,145.40 and 116,920.40

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Solution

The fourth proportional to 118,763.60, 178,145.40 and 116,920.40 is: 175,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,763.60 : 178,145.40 = 116,920.40 : x
  2. Step 2: Convert to fraction form
    118,763.60/178,145.40 = 116,920.40/x
  3. Step 3: Cross multiply
    118,763.60x = 178,145.40 × 116,920.40
  4. Step 4: Simplify right side
    118,763.60x = 20,828,831,426.16
  5. Step 5: Solve for x
    x = 20,828,831,426.16/118,763.60
  6. Step 6: Final answer
    x = 175,380.60

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1.5x scale

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.