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Finding the Fourth Proportional to 404,368.40, 605,386.20 and 357,712.40

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Solution

The fourth proportional to 404,368.40, 605,386.20 and 357,712.40 is: 535,536.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,368.40 : 605,386.20 = 357,712.40 : x
  2. Step 2: Convert to fraction form
    404,368.40/605,386.20 = 357,712.40/x
  3. Step 3: Cross multiply
    404,368.40x = 605,386.20 × 357,712.40
  4. Step 4: Simplify right side
    404,368.40x = 216,554,150,528.88
  5. Step 5: Solve for x
    x = 216,554,150,528.88/404,368.40
  6. Step 6: Final answer
    x = 535,536.78

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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.