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Finding the Fourth Proportional to 61,980.71, 85,532.91 and 33,686.60

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Solution

The fourth proportional to 61,980.71, 85,532.91 and 33,686.60 is: 46,487.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,980.71 : 85,532.91 = 33,686.60 : x
  2. Step 2: Convert to fraction form
    61,980.71/85,532.91 = 33,686.60/x
  3. Step 3: Cross multiply
    61,980.71x = 85,532.91 × 33,686.60
  4. Step 4: Simplify right side
    61,980.71x = 2,881,312,926.01
  5. Step 5: Solve for x
    x = 2,881,312,926.01/61,980.71
  6. Step 6: Final answer
    x = 46,487.25

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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.