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Finding the Fourth Proportional to 410,801.60, 616,202.40 and 390,065.60

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Solution

The fourth proportional to 410,801.60, 616,202.40 and 390,065.60 is: 585,098.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,801.60 : 616,202.40 = 390,065.60 : x
  2. Step 2: Convert to fraction form
    410,801.60/616,202.40 = 390,065.60/x
  3. Step 3: Cross multiply
    410,801.60x = 616,202.40 × 390,065.60
  4. Step 4: Simplify right side
    410,801.60x = 240,359,358,877.44
  5. Step 5: Solve for x
    x = 240,359,358,877.44/410,801.60
  6. Step 6: Final answer
    x = 585,098.40

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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.