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Finding the Fourth Proportional to 112,858.96, 155,714.52 and 70,424.32

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Solution

The fourth proportional to 112,858.96, 155,714.52 and 70,424.32 is: 97,166.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,858.96 : 155,714.52 = 70,424.32 : x
  2. Step 2: Convert to fraction form
    112,858.96/155,714.52 = 70,424.32/x
  3. Step 3: Cross multiply
    112,858.96x = 155,714.52 × 70,424.32
  4. Step 4: Simplify right side
    112,858.96x = 10,966,089,185.13
  5. Step 5: Solve for x
    x = 10,966,089,185.13/112,858.96
  6. Step 6: Final answer
    x = 97,166.31

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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.