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Finding the Fourth Proportional to 157,658.84, 217,574.01 and 89,685.67

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Solution

The fourth proportional to 157,658.84, 217,574.01 and 89,685.67 is: 123,768.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,658.84 : 217,574.01 = 89,685.67 : x
  2. Step 2: Convert to fraction form
    157,658.84/217,574.01 = 89,685.67/x
  3. Step 3: Cross multiply
    157,658.84x = 217,574.01 × 89,685.67
  4. Step 4: Simplify right side
    157,658.84x = 19,513,270,317.50
  5. Step 5: Solve for x
    x = 19,513,270,317.50/157,658.84
  6. Step 6: Final answer
    x = 123,768.96

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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.