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Finding the Fourth Proportional to 281,273.11, 388,141.99 and 153,924.10

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Solution

The fourth proportional to 281,273.11, 388,141.99 and 153,924.10 is: 212,407.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,273.11 : 388,141.99 = 153,924.10 : x
  2. Step 2: Convert to fraction form
    281,273.11/388,141.99 = 153,924.10/x
  3. Step 3: Cross multiply
    281,273.11x = 388,141.99 × 153,924.10
  4. Step 4: Simplify right side
    281,273.11x = 59,744,406,482.96
  5. Step 5: Solve for x
    x = 59,744,406,482.96/281,273.11
  6. Step 6: Final answer
    x = 212,407.10

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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.