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Finding the Fourth Proportional to 432,328.57, 595,292.72 and 391,778.55

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Solution

The fourth proportional to 432,328.57, 595,292.72 and 391,778.55 is: 539,457.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,328.57 : 595,292.72 = 391,778.55 : x
  2. Step 2: Convert to fraction form
    432,328.57/595,292.72 = 391,778.55/x
  3. Step 3: Cross multiply
    432,328.57x = 595,292.72 × 391,778.55
  4. Step 4: Simplify right side
    432,328.57x = 233,222,918,667.16
  5. Step 5: Solve for x
    x = 233,222,918,667.16/432,328.57
  6. Step 6: Final answer
    x = 539,457.57

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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.