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Finding the Fourth Proportional to 55,970.93, 77,239.76 and 30,476.90

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Solution

The fourth proportional to 55,970.93, 77,239.76 and 30,476.90 is: 42,058.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,970.93 : 77,239.76 = 30,476.90 : x
  2. Step 2: Convert to fraction form
    55,970.93/77,239.76 = 30,476.90/x
  3. Step 3: Cross multiply
    55,970.93x = 77,239.76 × 30,476.90
  4. Step 4: Simplify right side
    55,970.93x = 2,354,027,902.96
  5. Step 5: Solve for x
    x = 2,354,027,902.96/55,970.93
  6. Step 6: Final answer
    x = 42,058.05

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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.