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Finding the Fourth Proportional to 93,980.12, 129,656.98 and 59,989.88

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Solution

The fourth proportional to 93,980.12, 129,656.98 and 59,989.88 is: 82,763.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,980.12 : 129,656.98 = 59,989.88 : x
  2. Step 2: Convert to fraction form
    93,980.12/129,656.98 = 59,989.88/x
  3. Step 3: Cross multiply
    93,980.12x = 129,656.98 × 59,989.88
  4. Step 4: Simplify right side
    93,980.12x = 7,778,106,671.36
  5. Step 5: Solve for x
    x = 7,778,106,671.36/93,980.12
  6. Step 6: Final answer
    x = 82,763.32

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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.