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Finding the Fourth Proportional to 615,934.99, 849,966.37 and 386,615.49

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Solution

The fourth proportional to 615,934.99, 849,966.37 and 386,615.49 is: 533,514.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,934.99 : 849,966.37 = 386,615.49 : x
  2. Step 2: Convert to fraction form
    615,934.99/849,966.37 = 386,615.49/x
  3. Step 3: Cross multiply
    615,934.99x = 849,966.37 × 386,615.49
  4. Step 4: Simplify right side
    615,934.99x = 328,610,164,621.07
  5. Step 5: Solve for x
    x = 328,610,164,621.07/615,934.99
  6. Step 6: Final answer
    x = 533,514.36

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1.5x scale

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.