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Finding the Fourth Proportional to 101,306.60, 139,802.98 and 56,594.60

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Solution

The fourth proportional to 101,306.60, 139,802.98 and 56,594.60 is: 78,100.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,306.60 : 139,802.98 = 56,594.60 : x
  2. Step 2: Convert to fraction form
    101,306.60/139,802.98 = 56,594.60/x
  3. Step 3: Cross multiply
    101,306.60x = 139,802.98 × 56,594.60
  4. Step 4: Simplify right side
    101,306.60x = 7,912,093,731.91
  5. Step 5: Solve for x
    x = 7,912,093,731.91/101,306.60
  6. Step 6: Final answer
    x = 78,100.48

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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.