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Finding the Fourth Proportional to 573,428.16, 791,340.44 and 315,316.29

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Solution

The fourth proportional to 573,428.16, 791,340.44 and 315,316.29 is: 435,141.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,428.16 : 791,340.44 = 315,316.29 : x
  2. Step 2: Convert to fraction form
    573,428.16/791,340.44 = 315,316.29/x
  3. Step 3: Cross multiply
    573,428.16x = 791,340.44 × 315,316.29
  4. Step 4: Simplify right side
    573,428.16x = 249,522,533,058.71
  5. Step 5: Solve for x
    x = 249,522,533,058.71/573,428.16
  6. Step 6: Final answer
    x = 435,141.75

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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.