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Finding the Fourth Proportional to 573,132.95, 790,931.69 and 315,033.80

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Solution

The fourth proportional to 573,132.95, 790,931.69 and 315,033.80 is: 434,751.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,132.95 : 790,931.69 = 315,033.80 : x
  2. Step 2: Convert to fraction form
    573,132.95/790,931.69 = 315,033.80/x
  3. Step 3: Cross multiply
    573,132.95x = 790,931.69 × 315,033.80
  4. Step 4: Simplify right side
    573,132.95x = 249,170,210,311.30
  5. Step 5: Solve for x
    x = 249,170,210,311.30/573,132.95
  6. Step 6: Final answer
    x = 434,751.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.