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Finding the Fourth Proportional to 93,032.60, 139,548.90 and 85,159.40

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Solution

The fourth proportional to 93,032.60, 139,548.90 and 85,159.40 is: 127,739.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,032.60 : 139,548.90 = 85,159.40 : x
  2. Step 2: Convert to fraction form
    93,032.60/139,548.90 = 85,159.40/x
  3. Step 3: Cross multiply
    93,032.60x = 139,548.90 × 85,159.40
  4. Step 4: Simplify right side
    93,032.60x = 11,883,900,594.66
  5. Step 5: Solve for x
    x = 11,883,900,594.66/93,032.60
  6. Step 6: Final answer
    x = 127,739.10

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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.