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Finding the Fourth Proportional to 553,342.60, 830,013.90 and 545,048.20

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Solution

The fourth proportional to 553,342.60, 830,013.90 and 545,048.20 is: 817,572.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,342.60 : 830,013.90 = 545,048.20 : x
  2. Step 2: Convert to fraction form
    553,342.60/830,013.90 = 545,048.20/x
  3. Step 3: Cross multiply
    553,342.60x = 830,013.90 × 545,048.20
  4. Step 4: Simplify right side
    553,342.60x = 452,397,582,169.98
  5. Step 5: Solve for x
    x = 452,397,582,169.98/553,342.60
  6. Step 6: Final answer
    x = 817,572.30

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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.