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Finding the Fourth Proportional to 70,980.71, 97,928.61 and 45,501.11

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Solution

The fourth proportional to 70,980.71, 97,928.61 and 45,501.11 is: 62,775.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,980.71 : 97,928.61 = 45,501.11 : x
  2. Step 2: Convert to fraction form
    70,980.71/97,928.61 = 45,501.11/x
  3. Step 3: Cross multiply
    70,980.71x = 97,928.61 × 45,501.11
  4. Step 4: Simplify right side
    70,980.71x = 4,455,860,418.66
  5. Step 5: Solve for x
    x = 4,455,860,418.66/70,980.71
  6. Step 6: Final answer
    x = 62,775.66

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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.