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Finding the Fourth Proportional to 130,165.75, 179,628.86 and 70,549.75

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Solution

The fourth proportional to 130,165.75, 179,628.86 and 70,549.75 is: 97,358.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,165.75 : 179,628.86 = 70,549.75 : x
  2. Step 2: Convert to fraction form
    130,165.75/179,628.86 = 70,549.75/x
  3. Step 3: Cross multiply
    130,165.75x = 179,628.86 × 70,549.75
  4. Step 4: Simplify right side
    130,165.75x = 12,672,771,165.79
  5. Step 5: Solve for x
    x = 12,672,771,165.79/130,165.75
  6. Step 6: Final answer
    x = 97,358.72

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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.