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Finding the Fourth Proportional to 110,925.92, 153,109.16 and 65,619.65

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Solution

The fourth proportional to 110,925.92, 153,109.16 and 65,619.65 is: 90,573.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,925.92 : 153,109.16 = 65,619.65 : x
  2. Step 2: Convert to fraction form
    110,925.92/153,109.16 = 65,619.65/x
  3. Step 3: Cross multiply
    110,925.92x = 153,109.16 × 65,619.65
  4. Step 4: Simplify right side
    110,925.92x = 10,046,969,490.99
  5. Step 5: Solve for x
    x = 10,046,969,490.99/110,925.92
  6. Step 6: Final answer
    x = 90,573.69

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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.