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Finding the Fourth Proportional to 58,946.80, 88,420.20 and 57,780.40

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Solution

The fourth proportional to 58,946.80, 88,420.20 and 57,780.40 is: 86,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,946.80 : 88,420.20 = 57,780.40 : x
  2. Step 2: Convert to fraction form
    58,946.80/88,420.20 = 57,780.40/x
  3. Step 3: Cross multiply
    58,946.80x = 88,420.20 × 57,780.40
  4. Step 4: Simplify right side
    58,946.80x = 5,108,954,524.08
  5. Step 5: Solve for x
    x = 5,108,954,524.08/58,946.80
  6. Step 6: Final answer
    x = 86,670.60

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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.