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Finding the Fourth Proportional to 347,711.60, 521,567.40 and 98,393.60

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Solution

The fourth proportional to 347,711.60, 521,567.40 and 98,393.60 is: 147,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,711.60 : 521,567.40 = 98,393.60 : x
  2. Step 2: Convert to fraction form
    347,711.60/521,567.40 = 98,393.60/x
  3. Step 3: Cross multiply
    347,711.60x = 521,567.40 × 98,393.60
  4. Step 4: Simplify right side
    347,711.60x = 51,318,894,128.64
  5. Step 5: Solve for x
    x = 51,318,894,128.64/347,711.60
  6. Step 6: Final answer
    x = 147,590.40

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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.