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Finding the Fourth Proportional to 474,143.60, 711,215.40 and 249,417.20

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Solution

The fourth proportional to 474,143.60, 711,215.40 and 249,417.20 is: 374,125.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,143.60 : 711,215.40 = 249,417.20 : x
  2. Step 2: Convert to fraction form
    474,143.60/711,215.40 = 249,417.20/x
  3. Step 3: Cross multiply
    474,143.60x = 711,215.40 × 249,417.20
  4. Step 4: Simplify right side
    474,143.60x = 177,389,353,664.88
  5. Step 5: Solve for x
    x = 177,389,353,664.88/474,143.60
  6. Step 6: Final answer
    x = 374,125.80

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Similar ratio
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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.