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Finding the Fourth Proportional to 93,447.61, 128,953.22 and 53,157.60

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Solution

The fourth proportional to 93,447.61, 128,953.22 and 53,157.60 is: 73,354.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,447.61 : 128,953.22 = 53,157.60 : x
  2. Step 2: Convert to fraction form
    93,447.61/128,953.22 = 53,157.60/x
  3. Step 3: Cross multiply
    93,447.61x = 128,953.22 × 53,157.60
  4. Step 4: Simplify right side
    93,447.61x = 6,854,843,421.68
  5. Step 5: Solve for x
    x = 6,854,843,421.68/93,447.61
  6. Step 6: Final answer
    x = 73,354.94

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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.