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Finding the Fourth Proportional to 93,079.36, 128,427.68 and 52,784.32

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Solution

The fourth proportional to 93,079.36, 128,427.68 and 52,784.32 is: 72,829.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,079.36 : 128,427.68 = 52,784.32 : x
  2. Step 2: Convert to fraction form
    93,079.36/128,427.68 = 52,784.32/x
  3. Step 3: Cross multiply
    93,079.36x = 128,427.68 × 52,784.32
  4. Step 4: Simplify right side
    93,079.36x = 6,778,967,757.98
  5. Step 5: Solve for x
    x = 6,778,967,757.98/93,079.36
  6. Step 6: Final answer
    x = 72,829.98

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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.