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Finding the Fourth Proportional to 249,705.60, 374,558.40 and 165,724.80

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Solution

The fourth proportional to 249,705.60, 374,558.40 and 165,724.80 is: 248,587.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,705.60 : 374,558.40 = 165,724.80 : x
  2. Step 2: Convert to fraction form
    249,705.60/374,558.40 = 165,724.80/x
  3. Step 3: Cross multiply
    249,705.60x = 374,558.40 × 165,724.80
  4. Step 4: Simplify right side
    249,705.60x = 62,073,615,928.32
  5. Step 5: Solve for x
    x = 62,073,615,928.32/249,705.60
  6. Step 6: Final answer
    x = 248,587.20

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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.