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Finding the Fourth Proportional to 93,213, 128,643.66 and 52,937.64

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Solution

The fourth proportional to 93,213, 128,643.66 and 52,937.64 is: 73,059.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,213 : 128,643.66 = 52,937.64 : x
  2. Step 2: Convert to fraction form
    93,213/128,643.66 = 52,937.64/x
  3. Step 3: Cross multiply
    93,213x = 128,643.66 × 52,937.64
  4. Step 4: Simplify right side
    93,213x = 6,810,091,761.36
  5. Step 5: Solve for x
    x = 6,810,091,761.36/93,213
  6. Step 6: Final answer
    x = 73,059.46

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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.