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Finding the Fourth Proportional to 532,609.19, 734,999.50 and 290,891.78

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Solution

The fourth proportional to 532,609.19, 734,999.50 and 290,891.78 is: 401,430.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,609.19 : 734,999.50 = 290,891.78 : x
  2. Step 2: Convert to fraction form
    532,609.19/734,999.50 = 290,891.78/x
  3. Step 3: Cross multiply
    532,609.19x = 734,999.50 × 290,891.78
  4. Step 4: Simplify right side
    532,609.19x = 213,805,312,854.11
  5. Step 5: Solve for x
    x = 213,805,312,854.11/532,609.19
  6. Step 6: Final answer
    x = 401,430.01

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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.