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Finding the Fourth Proportional to 55,653.40, 83,480.10 and 42,531.40

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Solution

The fourth proportional to 55,653.40, 83,480.10 and 42,531.40 is: 63,797.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,653.40 : 83,480.10 = 42,531.40 : x
  2. Step 2: Convert to fraction form
    55,653.40/83,480.10 = 42,531.40/x
  3. Step 3: Cross multiply
    55,653.40x = 83,480.10 × 42,531.40
  4. Step 4: Simplify right side
    55,653.40x = 3,550,525,525.14
  5. Step 5: Solve for x
    x = 3,550,525,525.14/55,653.40
  6. Step 6: Final answer
    x = 63,797.10

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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.