Home / 76,278.40-114,417.60-71,094.40

Finding the Fourth Proportional to 76,278.40, 114,417.60 and 71,094.40

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Solution

The fourth proportional to 76,278.40, 114,417.60 and 71,094.40 is: 106,641.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,278.40 : 114,417.60 = 71,094.40 : x
  2. Step 2: Convert to fraction form
    76,278.40/114,417.60 = 71,094.40/x
  3. Step 3: Cross multiply
    76,278.40x = 114,417.60 × 71,094.40
  4. Step 4: Simplify right side
    76,278.40x = 8,134,450,621.44
  5. Step 5: Solve for x
    x = 8,134,450,621.44/76,278.40
  6. Step 6: Final answer
    x = 106,641.60

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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.