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Finding the Fourth Proportional to 124,462, 171,761.88 and 70,749.28

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Solution

The fourth proportional to 124,462, 171,761.88 and 70,749.28 is: 97,636.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,462 : 171,761.88 = 70,749.28 : x
  2. Step 2: Convert to fraction form
    124,462/171,761.88 = 70,749.28/x
  3. Step 3: Cross multiply
    124,462x = 171,761.88 × 70,749.28
  4. Step 4: Simplify right side
    124,462x = 12,152,029,341.45
  5. Step 5: Solve for x
    x = 12,152,029,341.45/124,462
  6. Step 6: Final answer
    x = 97,636.46

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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.