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Finding the Fourth Proportional to 70,925.82, 106,437.87 and 45,903.57

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Solution

The fourth proportional to 70,925.82, 106,437.87 and 45,903.57 is: 68,887.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,925.82 : 106,437.87 = 45,903.57 : x
  2. Step 2: Convert to fraction form
    70,925.82/106,437.87 = 45,903.57/x
  3. Step 3: Cross multiply
    70,925.82x = 106,437.87 × 45,903.57
  4. Step 4: Simplify right side
    70,925.82x = 4,885,878,216.20
  5. Step 5: Solve for x
    x = 4,885,878,216.20/70,925.82
  6. Step 6: Final answer
    x = 68,887.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.