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Finding the Fourth Proportional to 114,910.40, 172,365.60 and 77,585.60

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Solution

The fourth proportional to 114,910.40, 172,365.60 and 77,585.60 is: 116,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,910.40 : 172,365.60 = 77,585.60 : x
  2. Step 2: Convert to fraction form
    114,910.40/172,365.60 = 77,585.60/x
  3. Step 3: Cross multiply
    114,910.40x = 172,365.60 × 77,585.60
  4. Step 4: Simplify right side
    114,910.40x = 13,373,088,495.36
  5. Step 5: Solve for x
    x = 13,373,088,495.36/114,910.40
  6. Step 6: Final answer
    x = 116,378.40

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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.