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Finding the Fourth Proportional to 530,073.75, 731,501.78 and 291,609.75

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Solution

The fourth proportional to 530,073.75, 731,501.78 and 291,609.75 is: 402,421.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,073.75 : 731,501.78 = 291,609.75 : x
  2. Step 2: Convert to fraction form
    530,073.75/731,501.78 = 291,609.75/x
  3. Step 3: Cross multiply
    530,073.75x = 731,501.78 × 291,609.75
  4. Step 4: Simplify right side
    530,073.75x = 213,313,051,190.36
  5. Step 5: Solve for x
    x = 213,313,051,190.36/530,073.75
  6. Step 6: Final answer
    x = 402,421.46

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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.