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Finding the Fourth Proportional to 235,686.84, 325,244.46 and 129,702.84

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Solution

The fourth proportional to 235,686.84, 325,244.46 and 129,702.84 is: 178,988.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,686.84 : 325,244.46 = 129,702.84 : x
  2. Step 2: Convert to fraction form
    235,686.84/325,244.46 = 129,702.84/x
  3. Step 3: Cross multiply
    235,686.84x = 325,244.46 × 129,702.84
  4. Step 4: Simplify right side
    235,686.84x = 42,185,130,156.27
  5. Step 5: Solve for x
    x = 42,185,130,156.27/235,686.84
  6. Step 6: Final answer
    x = 178,988.06

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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.