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Finding the Fourth Proportional to 411,015.60, 616,588.20 and 130,561.20

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Solution

The fourth proportional to 411,015.60, 616,588.20 and 130,561.20 is: 195,862.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,015.60 : 616,588.20 = 130,561.20 : x
  2. Step 2: Convert to fraction form
    411,015.60/616,588.20 = 130,561.20/x
  3. Step 3: Cross multiply
    411,015.60x = 616,588.20 × 130,561.20
  4. Step 4: Simplify right side
    411,015.60x = 80,502,495,297.84
  5. Step 5: Solve for x
    x = 80,502,495,297.84/411,015.60
  6. Step 6: Final answer
    x = 195,862.38

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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.