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Finding the Fourth Proportional to 86,030.55, 118,741.14 and 47,803.23

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Solution

The fourth proportional to 86,030.55, 118,741.14 and 47,803.23 is: 65,979.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,030.55 : 118,741.14 = 47,803.23 : x
  2. Step 2: Convert to fraction form
    86,030.55/118,741.14 = 47,803.23/x
  3. Step 3: Cross multiply
    86,030.55x = 118,741.14 × 47,803.23
  4. Step 4: Simplify right side
    86,030.55x = 5,676,210,025.88
  5. Step 5: Solve for x
    x = 5,676,210,025.88/86,030.55
  6. Step 6: Final answer
    x = 65,979.00

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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.