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Finding the Fourth Proportional to 61,509, 84,885.56 and 37,628.20

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Solution

The fourth proportional to 61,509, 84,885.56 and 37,628.20 is: 51,928.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,509 : 84,885.56 = 37,628.20 : x
  2. Step 2: Convert to fraction form
    61,509/84,885.56 = 37,628.20/x
  3. Step 3: Cross multiply
    61,509x = 84,885.56 × 37,628.20
  4. Step 4: Simplify right side
    61,509x = 3,194,090,828.79
  5. Step 5: Solve for x
    x = 3,194,090,828.79/61,509
  6. Step 6: Final answer
    x = 51,928.84

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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.