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Finding the Fourth Proportional to 530,740.62, 732,436.02 and 289,033.38

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Solution

The fourth proportional to 530,740.62, 732,436.02 and 289,033.38 is: 398,873.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,740.62 : 732,436.02 = 289,033.38 : x
  2. Step 2: Convert to fraction form
    530,740.62/732,436.02 = 289,033.38/x
  3. Step 3: Cross multiply
    530,740.62x = 732,436.02 × 289,033.38
  4. Step 4: Simplify right side
    530,740.62x = 211,698,458,494.35
  5. Step 5: Solve for x
    x = 211,698,458,494.35/530,740.62
  6. Step 6: Final answer
    x = 398,873.67

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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.