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Finding the Fourth Proportional to 93,214.58, 139,117.64 and 86,894.14

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Solution

The fourth proportional to 93,214.58, 139,117.64 and 86,894.14 is: 129,684.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,214.58 : 139,117.64 = 86,894.14 : x
  2. Step 2: Convert to fraction form
    93,214.58/139,117.64 = 86,894.14/x
  3. Step 3: Cross multiply
    93,214.58x = 139,117.64 × 86,894.14
  4. Step 4: Simplify right side
    93,214.58x = 12,088,507,686.63
  5. Step 5: Solve for x
    x = 12,088,507,686.63/93,214.58
  6. Step 6: Final answer
    x = 129,684.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.