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Finding the Fourth Proportional to 111,432.94, 153,597.66 and 91,254.22

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Solution

The fourth proportional to 111,432.94, 153,597.66 and 91,254.22 is: 125,783.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,432.94 : 153,597.66 = 91,254.22 : x
  2. Step 2: Convert to fraction form
    111,432.94/153,597.66 = 91,254.22/x
  3. Step 3: Cross multiply
    111,432.94x = 153,597.66 × 91,254.22
  4. Step 4: Simplify right side
    111,432.94x = 14,016,434,657.13
  5. Step 5: Solve for x
    x = 14,016,434,657.13/111,432.94
  6. Step 6: Final answer
    x = 125,783.58

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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.