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Finding the Fourth Proportional to 691,215.48, 953,897.58 and 404,708.76

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Solution

The fourth proportional to 691,215.48, 953,897.58 and 404,708.76 is: 558,509.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,215.48 : 953,897.58 = 404,708.76 : x
  2. Step 2: Convert to fraction form
    691,215.48/953,897.58 = 404,708.76/x
  3. Step 3: Cross multiply
    691,215.48x = 953,897.58 × 404,708.76
  4. Step 4: Simplify right side
    691,215.48x = 386,050,706,768.80
  5. Step 5: Solve for x
    x = 386,050,706,768.80/691,215.48
  6. Step 6: Final answer
    x = 558,509.93

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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.