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Finding the Fourth Proportional to 127,920.60, 191,880.90 and 116,861.40

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Solution

The fourth proportional to 127,920.60, 191,880.90 and 116,861.40 is: 175,292.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,920.60 : 191,880.90 = 116,861.40 : x
  2. Step 2: Convert to fraction form
    127,920.60/191,880.90 = 116,861.40/x
  3. Step 3: Cross multiply
    127,920.60x = 191,880.90 × 116,861.40
  4. Step 4: Simplify right side
    127,920.60x = 22,423,470,607.26
  5. Step 5: Solve for x
    x = 22,423,470,607.26/127,920.60
  6. Step 6: Final answer
    x = 175,292.10

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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.