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Finding the Fourth Proportional to 64,291.60, 96,307.80 and 36,557.20

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Solution

The fourth proportional to 64,291.60, 96,307.80 and 36,557.20 is: 54,762.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,291.60 : 96,307.80 = 36,557.20 : x
  2. Step 2: Convert to fraction form
    64,291.60/96,307.80 = 36,557.20/x
  3. Step 3: Cross multiply
    64,291.60x = 96,307.80 × 36,557.20
  4. Step 4: Simplify right side
    64,291.60x = 3,520,743,506.16
  5. Step 5: Solve for x
    x = 3,520,743,506.16/64,291.60
  6. Step 6: Final answer
    x = 54,762.11

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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.