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Finding the Fourth Proportional to 65,903.34, 98,869.53 and 19,159.86

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Solution

The fourth proportional to 65,903.34, 98,869.53 and 19,159.86 is: 28,744.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,903.34 : 98,869.53 = 19,159.86 : x
  2. Step 2: Convert to fraction form
    65,903.34/98,869.53 = 19,159.86/x
  3. Step 3: Cross multiply
    65,903.34x = 98,869.53 × 19,159.86
  4. Step 4: Simplify right side
    65,903.34x = 1,894,326,353.07
  5. Step 5: Solve for x
    x = 1,894,326,353.07/65,903.34
  6. Step 6: Final answer
    x = 28,744.01

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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.