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Finding the Fourth Proportional to 70,655.59, 97,490.94 and 45,142.34

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Solution

The fourth proportional to 70,655.59, 97,490.94 and 45,142.34 is: 62,287.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,655.59 : 97,490.94 = 45,142.34 : x
  2. Step 2: Convert to fraction form
    70,655.59/97,490.94 = 45,142.34/x
  3. Step 3: Cross multiply
    70,655.59x = 97,490.94 × 45,142.34
  4. Step 4: Simplify right side
    70,655.59x = 4,400,969,160.40
  5. Step 5: Solve for x
    x = 4,400,969,160.40/70,655.59
  6. Step 6: Final answer
    x = 62,287.63

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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.