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Finding the Fourth Proportional to 104,400.40, 156,600.60 and 77,828.35

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Solution

The fourth proportional to 104,400.40, 156,600.60 and 77,828.35 is: 116,742.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,400.40 : 156,600.60 = 77,828.35 : x
  2. Step 2: Convert to fraction form
    104,400.40/156,600.60 = 77,828.35/x
  3. Step 3: Cross multiply
    104,400.40x = 156,600.60 × 77,828.35
  4. Step 4: Simplify right side
    104,400.40x = 12,187,966,307.01
  5. Step 5: Solve for x
    x = 12,187,966,307.01/104,400.40
  6. Step 6: Final answer
    x = 116,742.53

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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.