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Finding the Fourth Proportional to 153,207.68, 211,357.50 and 89,516.84

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Solution

The fourth proportional to 153,207.68, 211,357.50 and 89,516.84 is: 123,492.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,207.68 : 211,357.50 = 89,516.84 : x
  2. Step 2: Convert to fraction form
    153,207.68/211,357.50 = 89,516.84/x
  3. Step 3: Cross multiply
    153,207.68x = 211,357.50 × 89,516.84
  4. Step 4: Simplify right side
    153,207.68x = 18,920,055,510.30
  5. Step 5: Solve for x
    x = 18,920,055,510.30/153,207.68
  6. Step 6: Final answer
    x = 123,492.87

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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.