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Finding the Fourth Proportional to 136,124.64, 187,852.15 and 75,693.98

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Solution

The fourth proportional to 136,124.64, 187,852.15 and 75,693.98 is: 104,457.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,124.64 : 187,852.15 = 75,693.98 : x
  2. Step 2: Convert to fraction form
    136,124.64/187,852.15 = 75,693.98/x
  3. Step 3: Cross multiply
    136,124.64x = 187,852.15 × 75,693.98
  4. Step 4: Simplify right side
    136,124.64x = 14,219,276,885.06
  5. Step 5: Solve for x
    x = 14,219,276,885.06/136,124.64
  6. Step 6: Final answer
    x = 104,457.77

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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.