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Finding the Fourth Proportional to 619,798.60, 928,385.70 and 553,313.80

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Solution

The fourth proportional to 619,798.60, 928,385.70 and 553,313.80 is: 828,799.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,798.60 : 928,385.70 = 553,313.80 : x
  2. Step 2: Convert to fraction form
    619,798.60/928,385.70 = 553,313.80/x
  3. Step 3: Cross multiply
    619,798.60x = 928,385.70 × 553,313.80
  4. Step 4: Simplify right side
    619,798.60x = 513,688,619,532.66
  5. Step 5: Solve for x
    x = 513,688,619,532.66/619,798.60
  6. Step 6: Final answer
    x = 828,799.26

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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.