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Finding the Fourth Proportional to 573,133.36, 790,931.20 and 315,038.48

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Solution

The fourth proportional to 573,133.36, 790,931.20 and 315,038.48 is: 434,757.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,133.36 : 790,931.20 = 315,038.48 : x
  2. Step 2: Convert to fraction form
    573,133.36/790,931.20 = 315,038.48/x
  3. Step 3: Cross multiply
    573,133.36x = 790,931.20 × 315,038.48
  4. Step 4: Simplify right side
    573,133.36x = 249,173,763,032.58
  5. Step 5: Solve for x
    x = 249,173,763,032.58/573,133.36
  6. Step 6: Final answer
    x = 434,757.04

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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.