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Finding the Fourth Proportional to 91,176.89, 125,811.54 and 50,886.90

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Solution

The fourth proportional to 91,176.89, 125,811.54 and 50,886.90 is: 70,216.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,176.89 : 125,811.54 = 50,886.90 : x
  2. Step 2: Convert to fraction form
    91,176.89/125,811.54 = 50,886.90/x
  3. Step 3: Cross multiply
    91,176.89x = 125,811.54 × 50,886.90
  4. Step 4: Simplify right side
    91,176.89x = 6,402,159,254.83
  5. Step 5: Solve for x
    x = 6,402,159,254.83/91,176.89
  6. Step 6: Final answer
    x = 70,216.91

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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.