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Finding the Fourth Proportional to 556,235.40, 834,158.70 and 289,907.40

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Solution

The fourth proportional to 556,235.40, 834,158.70 and 289,907.40 is: 434,759.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,235.40 : 834,158.70 = 289,907.40 : x
  2. Step 2: Convert to fraction form
    556,235.40/834,158.70 = 289,907.40/x
  3. Step 3: Cross multiply
    556,235.40x = 834,158.70 × 289,907.40
  4. Step 4: Simplify right side
    556,235.40x = 241,828,779,904.38
  5. Step 5: Solve for x
    x = 241,828,779,904.38/556,235.40
  6. Step 6: Final answer
    x = 434,759.78

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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.