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Finding the Fourth Proportional to 93,038.40, 139,258.08 and 64,992.96

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Solution

The fourth proportional to 93,038.40, 139,258.08 and 64,992.96 is: 97,280.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,038.40 : 139,258.08 = 64,992.96 : x
  2. Step 2: Convert to fraction form
    93,038.40/139,258.08 = 64,992.96/x
  3. Step 3: Cross multiply
    93,038.40x = 139,258.08 × 64,992.96
  4. Step 4: Simplify right side
    93,038.40x = 9,050,794,823.12
  5. Step 5: Solve for x
    x = 9,050,794,823.12/93,038.40
  6. Step 6: Final answer
    x = 97,280.21

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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.