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Finding the Fourth Proportional to 93,459.29, 128,974.10 and 51,018.53

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Solution

The fourth proportional to 93,459.29, 128,974.10 and 51,018.53 is: 70,405.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,459.29 : 128,974.10 = 51,018.53 : x
  2. Step 2: Convert to fraction form
    93,459.29/128,974.10 = 51,018.53/x
  3. Step 3: Cross multiply
    93,459.29x = 128,974.10 × 51,018.53
  4. Step 4: Simplify right side
    93,459.29x = 6,580,068,090.11
  5. Step 5: Solve for x
    x = 6,580,068,090.11/93,459.29
  6. Step 6: Final answer
    x = 70,405.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.