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Finding the Fourth Proportional to 93,348.36, 128,783.10 and 54,031.48

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Solution

The fourth proportional to 93,348.36, 128,783.10 and 54,031.48 is: 74,541.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,348.36 : 128,783.10 = 54,031.48 : x
  2. Step 2: Convert to fraction form
    93,348.36/128,783.10 = 54,031.48/x
  3. Step 3: Cross multiply
    93,348.36x = 128,783.10 × 54,031.48
  4. Step 4: Simplify right side
    93,348.36x = 6,958,341,491.99
  5. Step 5: Solve for x
    x = 6,958,341,491.99/93,348.36
  6. Step 6: Final answer
    x = 74,541.66

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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.