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Finding the Fourth Proportional to 519.03, 715.57 and 430.18

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Solution

The fourth proportional to 519.03, 715.57 and 430.18 is: 593.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.03 : 715.57 = 430.18 : x
  2. Step 2: Convert to fraction form
    519.03/715.57 = 430.18/x
  3. Step 3: Cross multiply
    519.03x = 715.57 × 430.18
  4. Step 4: Simplify right side
    519.03x = 307,821.04
  5. Step 5: Solve for x
    x = 307,821.04/519.03
  6. Step 6: Final answer
    x = 593.07

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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.