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Finding the Fourth Proportional to 112,099.68, 154,690.56 and 61,798.68

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Solution

The fourth proportional to 112,099.68, 154,690.56 and 61,798.68 is: 85,278.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,099.68 : 154,690.56 = 61,798.68 : x
  2. Step 2: Convert to fraction form
    112,099.68/154,690.56 = 61,798.68/x
  3. Step 3: Cross multiply
    112,099.68x = 154,690.56 × 61,798.68
  4. Step 4: Simplify right side
    112,099.68x = 9,559,672,416.46
  5. Step 5: Solve for x
    x = 9,559,672,416.46/112,099.68
  6. Step 6: Final answer
    x = 85,278.32

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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.