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Finding the Fourth Proportional to 235,510.13, 325,000.88 and 128,077.87

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Solution

The fourth proportional to 235,510.13, 325,000.88 and 128,077.87 is: 176,745.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,510.13 : 325,000.88 = 128,077.87 : x
  2. Step 2: Convert to fraction form
    235,510.13/325,000.88 = 128,077.87/x
  3. Step 3: Cross multiply
    235,510.13x = 325,000.88 × 128,077.87
  4. Step 4: Simplify right side
    235,510.13x = 41,625,418,193.13
  5. Step 5: Solve for x
    x = 41,625,418,193.13/235,510.13
  6. Step 6: Final answer
    x = 176,745.77

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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.