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Finding the Fourth Proportional to 70,355.51, 97,090.76 and 38,090.48

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Solution

The fourth proportional to 70,355.51, 97,090.76 and 38,090.48 is: 52,564.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,355.51 : 97,090.76 = 38,090.48 : x
  2. Step 2: Convert to fraction form
    70,355.51/97,090.76 = 38,090.48/x
  3. Step 3: Cross multiply
    70,355.51x = 97,090.76 × 38,090.48
  4. Step 4: Simplify right side
    70,355.51x = 3,698,232,976.06
  5. Step 5: Solve for x
    x = 3,698,232,976.06/70,355.51
  6. Step 6: Final answer
    x = 52,564.94

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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.