Home / 287,626.77-431,440.17-87,947.13

Finding the Fourth Proportional to 287,626.77, 431,440.17 and 87,947.13

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Solution

The fourth proportional to 287,626.77, 431,440.17 and 87,947.13 is: 131,920.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,626.77 : 431,440.17 = 87,947.13 : x
  2. Step 2: Convert to fraction form
    287,626.77/431,440.17 = 87,947.13/x
  3. Step 3: Cross multiply
    287,626.77x = 431,440.17 × 87,947.13
  4. Step 4: Simplify right side
    287,626.77x = 37,943,924,718.21
  5. Step 5: Solve for x
    x = 37,943,924,718.21/287,626.77
  6. Step 6: Final answer
    x = 131,920.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.