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Finding the Fourth Proportional to 261,886.60, 392,829.90 and 95,739.40

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Solution

The fourth proportional to 261,886.60, 392,829.90 and 95,739.40 is: 143,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,886.60 : 392,829.90 = 95,739.40 : x
  2. Step 2: Convert to fraction form
    261,886.60/392,829.90 = 95,739.40/x
  3. Step 3: Cross multiply
    261,886.60x = 392,829.90 × 95,739.40
  4. Step 4: Simplify right side
    261,886.60x = 37,609,298,928.06
  5. Step 5: Solve for x
    x = 37,609,298,928.06/261,886.60
  6. Step 6: Final answer
    x = 143,609.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.