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Finding the Fourth Proportional to 65,495.50, 90,176.56 and 59,509.26

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Solution

The fourth proportional to 65,495.50, 90,176.56 and 59,509.26 is: 81,934.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,495.50 : 90,176.56 = 59,509.26 : x
  2. Step 2: Convert to fraction form
    65,495.50/90,176.56 = 59,509.26/x
  3. Step 3: Cross multiply
    65,495.50x = 90,176.56 × 59,509.26
  4. Step 4: Simplify right side
    65,495.50x = 5,366,340,206.17
  5. Step 5: Solve for x
    x = 5,366,340,206.17/65,495.50
  6. Step 6: Final answer
    x = 81,934.49

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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.