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Finding the Fourth Proportional to 99,967.34, 137,950.76 and 59,157.92

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Solution

The fourth proportional to 99,967.34, 137,950.76 and 59,157.92 is: 81,635.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,967.34 : 137,950.76 = 59,157.92 : x
  2. Step 2: Convert to fraction form
    99,967.34/137,950.76 = 59,157.92/x
  3. Step 3: Cross multiply
    99,967.34x = 137,950.76 × 59,157.92
  4. Step 4: Simplify right side
    99,967.34x = 8,160,880,024.02
  5. Step 5: Solve for x
    x = 8,160,880,024.02/99,967.34
  6. Step 6: Final answer
    x = 81,635.46

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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.