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Finding the Fourth Proportional to 70,647.80, 97,396.53 and 56,356.10

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Solution

The fourth proportional to 70,647.80, 97,396.53 and 56,356.10 is: 77,693.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,647.80 : 97,396.53 = 56,356.10 : x
  2. Step 2: Convert to fraction form
    70,647.80/97,396.53 = 56,356.10/x
  3. Step 3: Cross multiply
    70,647.80x = 97,396.53 × 56,356.10
  4. Step 4: Simplify right side
    70,647.80x = 5,488,888,799.11
  5. Step 5: Solve for x
    x = 5,488,888,799.11/70,647.80
  6. Step 6: Final answer
    x = 77,693.70

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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.