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Finding the Fourth Proportional to 604,811.60, 907,217.40 and 394,686.80

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Solution

The fourth proportional to 604,811.60, 907,217.40 and 394,686.80 is: 592,030.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,811.60 : 907,217.40 = 394,686.80 : x
  2. Step 2: Convert to fraction form
    604,811.60/907,217.40 = 394,686.80/x
  3. Step 3: Cross multiply
    604,811.60x = 907,217.40 × 394,686.80
  4. Step 4: Simplify right side
    604,811.60x = 358,066,732,510.32
  5. Step 5: Solve for x
    x = 358,066,732,510.32/604,811.60
  6. Step 6: Final answer
    x = 592,030.20

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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.