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Finding the Fourth Proportional to 235,368.90, 353,045.16 and 75,442.50

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Solution

The fourth proportional to 235,368.90, 353,045.16 and 75,442.50 is: 113,161.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,368.90 : 353,045.16 = 75,442.50 : x
  2. Step 2: Convert to fraction form
    235,368.90/353,045.16 = 75,442.50/x
  3. Step 3: Cross multiply
    235,368.90x = 353,045.16 × 75,442.50
  4. Step 4: Simplify right side
    235,368.90x = 26,634,609,483.30
  5. Step 5: Solve for x
    x = 26,634,609,483.30/235,368.90
  6. Step 6: Final answer
    x = 113,161.12

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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.