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Finding the Fourth Proportional to 98,308.70, 135,671.19 and 53,599.58

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Solution

The fourth proportional to 98,308.70, 135,671.19 and 53,599.58 is: 73,970.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,308.70 : 135,671.19 = 53,599.58 : x
  2. Step 2: Convert to fraction form
    98,308.70/135,671.19 = 53,599.58/x
  3. Step 3: Cross multiply
    98,308.70x = 135,671.19 × 53,599.58
  4. Step 4: Simplify right side
    98,308.70x = 7,271,918,802.10
  5. Step 5: Solve for x
    x = 7,271,918,802.10/98,308.70
  6. Step 6: Final answer
    x = 73,970.25

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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.