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Finding the Fourth Proportional to 110,354.50, 152,278.68 and 61,945.35

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Solution

The fourth proportional to 110,354.50, 152,278.68 and 61,945.35 is: 85,478.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,354.50 : 152,278.68 = 61,945.35 : x
  2. Step 2: Convert to fraction form
    110,354.50/152,278.68 = 61,945.35/x
  3. Step 3: Cross multiply
    110,354.50x = 152,278.68 × 61,945.35
  4. Step 4: Simplify right side
    110,354.50x = 9,432,955,368.74
  5. Step 5: Solve for x
    x = 9,432,955,368.74/110,354.50
  6. Step 6: Final answer
    x = 85,478.67

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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.