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Finding the Fourth Proportional to 614,269.90, 921,404.85 and 348,549.40

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Solution

The fourth proportional to 614,269.90, 921,404.85 and 348,549.40 is: 522,824.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,269.90 : 921,404.85 = 348,549.40 : x
  2. Step 2: Convert to fraction form
    614,269.90/921,404.85 = 348,549.40/x
  3. Step 3: Cross multiply
    614,269.90x = 921,404.85 × 348,549.40
  4. Step 4: Simplify right side
    614,269.90x = 321,155,107,624.59
  5. Step 5: Solve for x
    x = 321,155,107,624.59/614,269.90
  6. Step 6: Final answer
    x = 522,824.10

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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.