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Finding the Fourth Proportional to 93,312.16, 140,004.72 and 64,811.68

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Solution

The fourth proportional to 93,312.16, 140,004.72 and 64,811.68 is: 97,242.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312.16 : 140,004.72 = 64,811.68 : x
  2. Step 2: Convert to fraction form
    93,312.16/140,004.72 = 64,811.68/x
  3. Step 3: Cross multiply
    93,312.16x = 140,004.72 × 64,811.68
  4. Step 4: Simplify right side
    93,312.16x = 9,073,941,111.13
  5. Step 5: Solve for x
    x = 9,073,941,111.13/93,312.16
  6. Step 6: Final answer
    x = 97,242.86

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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.