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Finding the Fourth Proportional to 124,478.64, 171,775.32 and 67,886.64

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Solution

The fourth proportional to 124,478.64, 171,775.32 and 67,886.64 is: 93,680.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,478.64 : 171,775.32 = 67,886.64 : x
  2. Step 2: Convert to fraction form
    124,478.64/171,775.32 = 67,886.64/x
  3. Step 3: Cross multiply
    124,478.64x = 171,775.32 × 67,886.64
  4. Step 4: Simplify right side
    124,478.64x = 11,661,249,309.72
  5. Step 5: Solve for x
    x = 11,661,249,309.72/124,478.64
  6. Step 6: Final answer
    x = 93,680.73

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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.