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Finding the Fourth Proportional to 690,552.78, 953,010.75 and 418,632.14

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Solution

The fourth proportional to 690,552.78, 953,010.75 and 418,632.14 is: 577,741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,552.78 : 953,010.75 = 418,632.14 : x
  2. Step 2: Convert to fraction form
    690,552.78/953,010.75 = 418,632.14/x
  3. Step 3: Cross multiply
    690,552.78x = 953,010.75 × 418,632.14
  4. Step 4: Simplify right side
    690,552.78x = 398,960,929,715.51
  5. Step 5: Solve for x
    x = 398,960,929,715.51/690,552.78
  6. Step 6: Final answer
    x = 577,741.40

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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.