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Finding the Fourth Proportional to 153,208.68, 211,358.88 and 89,517.84

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Solution

The fourth proportional to 153,208.68, 211,358.88 and 89,517.84 is: 123,494.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,208.68 : 211,358.88 = 89,517.84 : x
  2. Step 2: Convert to fraction form
    153,208.68/211,358.88 = 89,517.84/x
  3. Step 3: Cross multiply
    153,208.68x = 211,358.88 × 89,517.84
  4. Step 4: Simplify right side
    153,208.68x = 18,920,390,402.42
  5. Step 5: Solve for x
    x = 18,920,390,402.42/153,208.68
  6. Step 6: Final answer
    x = 123,494.25

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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.