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Finding the Fourth Proportional to 61,810.60, 92,715.90 and 57,663.40

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Solution

The fourth proportional to 61,810.60, 92,715.90 and 57,663.40 is: 86,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,810.60 : 92,715.90 = 57,663.40 : x
  2. Step 2: Convert to fraction form
    61,810.60/92,715.90 = 57,663.40/x
  3. Step 3: Cross multiply
    61,810.60x = 92,715.90 × 57,663.40
  4. Step 4: Simplify right side
    61,810.60x = 5,346,314,028.06
  5. Step 5: Solve for x
    x = 5,346,314,028.06/61,810.60
  6. Step 6: Final answer
    x = 86,495.10

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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.