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Finding the Fourth Proportional to 60,705.80, 91,058.70 and 39,710.60

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Solution

The fourth proportional to 60,705.80, 91,058.70 and 39,710.60 is: 59,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,705.80 : 91,058.70 = 39,710.60 : x
  2. Step 2: Convert to fraction form
    60,705.80/91,058.70 = 39,710.60/x
  3. Step 3: Cross multiply
    60,705.80x = 91,058.70 × 39,710.60
  4. Step 4: Simplify right side
    60,705.80x = 3,615,995,612.22
  5. Step 5: Solve for x
    x = 3,615,995,612.22/60,705.80
  6. Step 6: Final answer
    x = 59,565.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.