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Finding the Fourth Proportional to 387,036.90, 532,953.84 and 358,810.02

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Solution

The fourth proportional to 387,036.90, 532,953.84 and 358,810.02 is: 494,085.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,036.90 : 532,953.84 = 358,810.02 : x
  2. Step 2: Convert to fraction form
    387,036.90/532,953.84 = 358,810.02/x
  3. Step 3: Cross multiply
    387,036.90x = 532,953.84 × 358,810.02
  4. Step 4: Simplify right side
    387,036.90x = 191,229,177,989.48
  5. Step 5: Solve for x
    x = 191,229,177,989.48/387,036.90
  6. Step 6: Final answer
    x = 494,085.13

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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.