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Finding the Fourth Proportional to 160,421.22, 240,631.47 and 65,695.53

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Solution

The fourth proportional to 160,421.22, 240,631.47 and 65,695.53 is: 98,543.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,421.22 : 240,631.47 = 65,695.53 : x
  2. Step 2: Convert to fraction form
    160,421.22/240,631.47 = 65,695.53/x
  3. Step 3: Cross multiply
    160,421.22x = 240,631.47 × 65,695.53
  4. Step 4: Simplify right side
    160,421.22x = 15,808,411,956.33
  5. Step 5: Solve for x
    x = 15,808,411,956.33/160,421.22
  6. Step 6: Final answer
    x = 98,543.15

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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.