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Finding the Fourth Proportional to 112,585.20, 168,829.20 and 56,403.60

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Solution

The fourth proportional to 112,585.20, 168,829.20 and 56,403.60 is: 84,581.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,585.20 : 168,829.20 = 56,403.60 : x
  2. Step 2: Convert to fraction form
    112,585.20/168,829.20 = 56,403.60/x
  3. Step 3: Cross multiply
    112,585.20x = 168,829.20 × 56,403.60
  4. Step 4: Simplify right side
    112,585.20x = 9,522,574,665.12
  5. Step 5: Solve for x
    x = 9,522,574,665.12/112,585.20
  6. Step 6: Final answer
    x = 84,581.05

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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.