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Finding the Fourth Proportional to 93,312.10, 139,968.15 and 89,812.90

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Solution

The fourth proportional to 93,312.10, 139,968.15 and 89,812.90 is: 134,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312.10 : 139,968.15 = 89,812.90 : x
  2. Step 2: Convert to fraction form
    93,312.10/139,968.15 = 89,812.90/x
  3. Step 3: Cross multiply
    93,312.10x = 139,968.15 × 89,812.90
  4. Step 4: Simplify right side
    93,312.10x = 12,570,945,459.14
  5. Step 5: Solve for x
    x = 12,570,945,459.14/93,312.10
  6. Step 6: Final answer
    x = 134,719.35

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Similar ratio
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1.5x scale

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.