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Finding the Fourth Proportional to 93,459.52, 128,973.76 and 51,018.09

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Solution

The fourth proportional to 93,459.52, 128,973.76 and 51,018.09 is: 70,404.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,459.52 : 128,973.76 = 51,018.09 : x
  2. Step 2: Convert to fraction form
    93,459.52/128,973.76 = 51,018.09/x
  3. Step 3: Cross multiply
    93,459.52x = 128,973.76 × 51,018.09
  4. Step 4: Simplify right side
    93,459.52x = 6,579,994,895.32
  5. Step 5: Solve for x
    x = 6,579,994,895.32/93,459.52
  6. Step 6: Final answer
    x = 70,404.76

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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.