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Finding the Fourth Proportional to 185,762.76, 256,431.09 and 125,415.15

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Solution

The fourth proportional to 185,762.76, 256,431.09 and 125,415.15 is: 173,125.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,762.76 : 256,431.09 = 125,415.15 : x
  2. Step 2: Convert to fraction form
    185,762.76/256,431.09 = 125,415.15/x
  3. Step 3: Cross multiply
    185,762.76x = 256,431.09 × 125,415.15
  4. Step 4: Simplify right side
    185,762.76x = 32,160,343,617.01
  5. Step 5: Solve for x
    x = 32,160,343,617.01/185,762.76
  6. Step 6: Final answer
    x = 173,125.89

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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.