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Finding the Fourth Proportional to 223,955.84, 309,099.36 and 128,494.16

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Solution

The fourth proportional to 223,955.84, 309,099.36 and 128,494.16 is: 177,345.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,955.84 : 309,099.36 = 128,494.16 : x
  2. Step 2: Convert to fraction form
    223,955.84/309,099.36 = 128,494.16/x
  3. Step 3: Cross multiply
    223,955.84x = 309,099.36 × 128,494.16
  4. Step 4: Simplify right side
    223,955.84x = 39,717,462,619.74
  5. Step 5: Solve for x
    x = 39,717,462,619.74/223,955.84
  6. Step 6: Final answer
    x = 177,345.06

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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.