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Finding the Fourth Proportional to 93,059.08, 128,417.64 and 54,820.20

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Solution

The fourth proportional to 93,059.08, 128,417.64 and 54,820.20 is: 75,649.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,059.08 : 128,417.64 = 54,820.20 : x
  2. Step 2: Convert to fraction form
    93,059.08/128,417.64 = 54,820.20/x
  3. Step 3: Cross multiply
    93,059.08x = 128,417.64 × 54,820.20
  4. Step 4: Simplify right side
    93,059.08x = 7,039,880,203.29
  5. Step 5: Solve for x
    x = 7,039,880,203.29/93,059.08
  6. Step 6: Final answer
    x = 75,649.58

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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.