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Finding the Fourth Proportional to 71,460.86, 98,368.46 and 61,765.90

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Solution

The fourth proportional to 71,460.86, 98,368.46 and 61,765.90 is: 85,023.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,460.86 : 98,368.46 = 61,765.90 : x
  2. Step 2: Convert to fraction form
    71,460.86/98,368.46 = 61,765.90/x
  3. Step 3: Cross multiply
    71,460.86x = 98,368.46 × 61,765.90
  4. Step 4: Simplify right side
    71,460.86x = 6,075,816,463.51
  5. Step 5: Solve for x
    x = 6,075,816,463.51/71,460.86
  6. Step 6: Final answer
    x = 85,023.00

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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.