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Finding the Fourth Proportional to 692,926.80, 956,530.50 and 421,082.01

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Solution

The fourth proportional to 692,926.80, 956,530.50 and 421,082.01 is: 581,270.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,926.80 : 956,530.50 = 421,082.01 : x
  2. Step 2: Convert to fraction form
    692,926.80/956,530.50 = 421,082.01/x
  3. Step 3: Cross multiply
    692,926.80x = 956,530.50 × 421,082.01
  4. Step 4: Simplify right side
    692,926.80x = 402,777,785,566.31
  5. Step 5: Solve for x
    x = 402,777,785,566.31/692,926.80
  6. Step 6: Final answer
    x = 581,270.32

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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.