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Finding the Fourth Proportional to 112,468.32, 168,698.16 and 28,228.32

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Solution

The fourth proportional to 112,468.32, 168,698.16 and 28,228.32 is: 42,341.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,468.32 : 168,698.16 = 28,228.32 : x
  2. Step 2: Convert to fraction form
    112,468.32/168,698.16 = 28,228.32/x
  3. Step 3: Cross multiply
    112,468.32x = 168,698.16 × 28,228.32
  4. Step 4: Simplify right side
    112,468.32x = 4,762,065,643.89
  5. Step 5: Solve for x
    x = 4,762,065,643.89/112,468.32
  6. Step 6: Final answer
    x = 42,341.40

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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.