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Finding the Fourth Proportional to 93,117.88, 128,502.30 and 50,676.40

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Solution

The fourth proportional to 93,117.88, 128,502.30 and 50,676.40 is: 69,933.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,117.88 : 128,502.30 = 50,676.40 : x
  2. Step 2: Convert to fraction form
    93,117.88/128,502.30 = 50,676.40/x
  3. Step 3: Cross multiply
    93,117.88x = 128,502.30 × 50,676.40
  4. Step 4: Simplify right side
    93,117.88x = 6,512,033,955.72
  5. Step 5: Solve for x
    x = 6,512,033,955.72/93,117.88
  6. Step 6: Final answer
    x = 69,933.23

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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.