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Finding the Fourth Proportional to 283,079.51, 390,653.58 and 154,019.52

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Solution

The fourth proportional to 283,079.51, 390,653.58 and 154,019.52 is: 212,549.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,079.51 : 390,653.58 = 154,019.52 : x
  2. Step 2: Convert to fraction form
    283,079.51/390,653.58 = 154,019.52/x
  3. Step 3: Cross multiply
    283,079.51x = 390,653.58 × 154,019.52
  4. Step 4: Simplify right side
    283,079.51x = 60,168,274,154.52
  5. Step 5: Solve for x
    x = 60,168,274,154.52/283,079.51
  6. Step 6: Final answer
    x = 212,549.03

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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.