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Finding the Fourth Proportional to 530,814.75, 732,513.42 and 289,101.57

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Solution

The fourth proportional to 530,814.75, 732,513.42 and 289,101.57 is: 398,954.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,814.75 : 732,513.42 = 289,101.57 : x
  2. Step 2: Convert to fraction form
    530,814.75/732,513.42 = 289,101.57/x
  3. Step 3: Cross multiply
    530,814.75x = 732,513.42 × 289,101.57
  4. Step 4: Simplify right side
    530,814.75x = 211,770,779,768.07
  5. Step 5: Solve for x
    x = 211,770,779,768.07/530,814.75
  6. Step 6: Final answer
    x = 398,954.21

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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.