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Finding the Fourth Proportional to 532,421.70, 734,736.36 and 290,703.52

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Solution

The fourth proportional to 532,421.70, 734,736.36 and 290,703.52 is: 401,167.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,421.70 : 734,736.36 = 290,703.52 : x
  2. Step 2: Convert to fraction form
    532,421.70/734,736.36 = 290,703.52/x
  3. Step 3: Cross multiply
    532,421.70x = 734,736.36 × 290,703.52
  4. Step 4: Simplify right side
    532,421.70x = 213,590,446,123.99
  5. Step 5: Solve for x
    x = 213,590,446,123.99/532,421.70
  6. Step 6: Final answer
    x = 401,167.81

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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.