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Finding the Fourth Proportional to 130,152, 179,609.88 and 70,536

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Solution

The fourth proportional to 130,152, 179,609.88 and 70,536 is: 97,339.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,152 : 179,609.88 = 70,536 : x
  2. Step 2: Convert to fraction form
    130,152/179,609.88 = 70,536/x
  3. Step 3: Cross multiply
    130,152x = 179,609.88 × 70,536
  4. Step 4: Simplify right side
    130,152x = 12,668,962,495.68
  5. Step 5: Solve for x
    x = 12,668,962,495.68/130,152
  6. Step 6: Final answer
    x = 97,339.75

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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.