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Finding the Fourth Proportional to 342,799.71, 514,281.58 and 143,009.06

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Solution

The fourth proportional to 342,799.71, 514,281.58 and 143,009.06 is: 214,547.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,799.71 : 514,281.58 = 143,009.06 : x
  2. Step 2: Convert to fraction form
    342,799.71/514,281.58 = 143,009.06/x
  3. Step 3: Cross multiply
    342,799.71x = 514,281.58 × 143,009.06
  4. Step 4: Simplify right side
    342,799.71x = 73,546,922,402.18
  5. Step 5: Solve for x
    x = 73,546,922,402.18/342,799.71
  6. Step 6: Final answer
    x = 214,547.80

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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.