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Finding the Fourth Proportional to 129,939, 179,315.82 and 70,323

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Solution

The fourth proportional to 129,939, 179,315.82 and 70,323 is: 97,045.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,939 : 179,315.82 = 70,323 : x
  2. Step 2: Convert to fraction form
    129,939/179,315.82 = 70,323/x
  3. Step 3: Cross multiply
    129,939x = 179,315.82 × 70,323
  4. Step 4: Simplify right side
    129,939x = 12,610,026,409.86
  5. Step 5: Solve for x
    x = 12,610,026,409.86/129,939
  6. Step 6: Final answer
    x = 97,045.74

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.