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Finding the Fourth Proportional to 353,075.40, 529,613.10 and 318,083.40

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Solution

The fourth proportional to 353,075.40, 529,613.10 and 318,083.40 is: 477,125.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,075.40 : 529,613.10 = 318,083.40 : x
  2. Step 2: Convert to fraction form
    353,075.40/529,613.10 = 318,083.40/x
  3. Step 3: Cross multiply
    353,075.40x = 529,613.10 × 318,083.40
  4. Step 4: Simplify right side
    353,075.40x = 168,461,135,532.54
  5. Step 5: Solve for x
    x = 168,461,135,532.54/353,075.40
  6. Step 6: Final answer
    x = 477,125.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.