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Finding the Fourth Proportional to 118,124.87, 163,015.74 and 64,410.93

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Solution

The fourth proportional to 118,124.87, 163,015.74 and 64,410.93 is: 88,888.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,124.87 : 163,015.74 = 64,410.93 : x
  2. Step 2: Convert to fraction form
    118,124.87/163,015.74 = 64,410.93/x
  3. Step 3: Cross multiply
    118,124.87x = 163,015.74 × 64,410.93
  4. Step 4: Simplify right side
    118,124.87x = 10,499,995,418.04
  5. Step 5: Solve for x
    x = 10,499,995,418.04/118,124.87
  6. Step 6: Final answer
    x = 88,888.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.