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Finding the Fourth Proportional to 110,838.64, 153,014.36 and 65,530.48

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Solution

The fourth proportional to 110,838.64, 153,014.36 and 65,530.48 is: 90,465.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,838.64 : 153,014.36 = 65,530.48 : x
  2. Step 2: Convert to fraction form
    110,838.64/153,014.36 = 65,530.48/x
  3. Step 3: Cross multiply
    110,838.64x = 153,014.36 × 65,530.48
  4. Step 4: Simplify right side
    110,838.64x = 10,027,104,457.69
  5. Step 5: Solve for x
    x = 10,027,104,457.69/110,838.64
  6. Step 6: Final answer
    x = 90,465.78

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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.