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Finding the Fourth Proportional to 72,508.50, 100,061.76 and 44,220.06

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Solution

The fourth proportional to 72,508.50, 100,061.76 and 44,220.06 is: 61,023.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,508.50 : 100,061.76 = 44,220.06 : x
  2. Step 2: Convert to fraction form
    72,508.50/100,061.76 = 44,220.06/x
  3. Step 3: Cross multiply
    72,508.50x = 100,061.76 × 44,220.06
  4. Step 4: Simplify right side
    72,508.50x = 4,424,737,030.91
  5. Step 5: Solve for x
    x = 4,424,737,030.91/72,508.50
  6. Step 6: Final answer
    x = 61,023.70

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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.