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Finding the Fourth Proportional to 115,416.66, 158,919.72 and 98,382.69

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Solution

The fourth proportional to 115,416.66, 158,919.72 and 98,382.69 is: 135,465.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,416.66 : 158,919.72 = 98,382.69 : x
  2. Step 2: Convert to fraction form
    115,416.66/158,919.72 = 98,382.69/x
  3. Step 3: Cross multiply
    115,416.66x = 158,919.72 × 98,382.69
  4. Step 4: Simplify right side
    115,416.66x = 15,634,949,547.65
  5. Step 5: Solve for x
    x = 15,634,949,547.65/115,416.66
  6. Step 6: Final answer
    x = 135,465.27

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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.