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Finding the Fourth Proportional to 539,878.63, 745,032.51 and 313,538.71

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Solution

The fourth proportional to 539,878.63, 745,032.51 and 313,538.71 is: 432,683.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,878.63 : 745,032.51 = 313,538.71 : x
  2. Step 2: Convert to fraction form
    539,878.63/745,032.51 = 313,538.71/x
  3. Step 3: Cross multiply
    539,878.63x = 745,032.51 × 313,538.71
  4. Step 4: Simplify right side
    539,878.63x = 233,596,532,093.46
  5. Step 5: Solve for x
    x = 233,596,532,093.46/539,878.63
  6. Step 6: Final answer
    x = 432,683.42

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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.