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Finding the Fourth Proportional to 79,980.32, 110,386.32 and 46,465.76

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Solution

The fourth proportional to 79,980.32, 110,386.32 and 46,465.76 is: 64,130.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,980.32 : 110,386.32 = 46,465.76 : x
  2. Step 2: Convert to fraction form
    79,980.32/110,386.32 = 46,465.76/x
  3. Step 3: Cross multiply
    79,980.32x = 110,386.32 × 46,465.76
  4. Step 4: Simplify right side
    79,980.32x = 5,129,184,252.40
  5. Step 5: Solve for x
    x = 5,129,184,252.40/79,980.32
  6. Step 6: Final answer
    x = 64,130.58

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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.