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Finding the Fourth Proportional to 64,374.80, 96,562.20 and 42,256.40

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Solution

The fourth proportional to 64,374.80, 96,562.20 and 42,256.40 is: 63,384.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,374.80 : 96,562.20 = 42,256.40 : x
  2. Step 2: Convert to fraction form
    64,374.80/96,562.20 = 42,256.40/x
  3. Step 3: Cross multiply
    64,374.80x = 96,562.20 × 42,256.40
  4. Step 4: Simplify right side
    64,374.80x = 4,080,370,948.08
  5. Step 5: Solve for x
    x = 4,080,370,948.08/64,374.80
  6. Step 6: Final answer
    x = 63,384.60

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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.