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Finding the Fourth Proportional to 555,065.40, 832,986.90 and 355,870.20

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Solution

The fourth proportional to 555,065.40, 832,986.90 and 355,870.20 is: 534,054.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,065.40 : 832,986.90 = 355,870.20 : x
  2. Step 2: Convert to fraction form
    555,065.40/832,986.90 = 355,870.20/x
  3. Step 3: Cross multiply
    555,065.40x = 832,986.90 × 355,870.20
  4. Step 4: Simplify right side
    555,065.40x = 296,435,214,700.38
  5. Step 5: Solve for x
    x = 296,435,214,700.38/555,065.40
  6. Step 6: Final answer
    x = 534,054.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.