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Finding the Fourth Proportional to 60,611.60, 90,841.80 and 31,041.20

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Solution

The fourth proportional to 60,611.60, 90,841.80 and 31,041.20 is: 46,523.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,611.60 : 90,841.80 = 31,041.20 : x
  2. Step 2: Convert to fraction form
    60,611.60/90,841.80 = 31,041.20/x
  3. Step 3: Cross multiply
    60,611.60x = 90,841.80 × 31,041.20
  4. Step 4: Simplify right side
    60,611.60x = 2,819,838,482.16
  5. Step 5: Solve for x
    x = 2,819,838,482.16/60,611.60
  6. Step 6: Final answer
    x = 46,523.08

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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.