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Finding the Fourth Proportional to 249,840.60, 374,631.30 and 91,987.80

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Solution

The fourth proportional to 249,840.60, 374,631.30 and 91,987.80 is: 137,933.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,840.60 : 374,631.30 = 91,987.80 : x
  2. Step 2: Convert to fraction form
    249,840.60/374,631.30 = 91,987.80/x
  3. Step 3: Cross multiply
    249,840.60x = 374,631.30 × 91,987.80
  4. Step 4: Simplify right side
    249,840.60x = 34,461,509,098.14
  5. Step 5: Solve for x
    x = 34,461,509,098.14/249,840.60
  6. Step 6: Final answer
    x = 137,933.98

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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.