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Finding the Fourth Proportional to 93,298, 128,750.88 and 50,856.40

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Solution

The fourth proportional to 93,298, 128,750.88 and 50,856.40 is: 70,181.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,298 : 128,750.88 = 50,856.40 : x
  2. Step 2: Convert to fraction form
    93,298/128,750.88 = 50,856.40/x
  3. Step 3: Cross multiply
    93,298x = 128,750.88 × 50,856.40
  4. Step 4: Simplify right side
    93,298x = 6,547,806,253.63
  5. Step 5: Solve for x
    x = 6,547,806,253.63/93,298
  6. Step 6: Final answer
    x = 70,181.64

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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.