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Finding the Fourth Proportional to 710,405.70, 1,060,426.16 and 620,724.12

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Solution

The fourth proportional to 710,405.70, 1,060,426.16 and 620,724.12 is: 926,558.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,405.70 : 1,060,426.16 = 620,724.12 : x
  2. Step 2: Convert to fraction form
    710,405.70/1,060,426.16 = 620,724.12/x
  3. Step 3: Cross multiply
    710,405.70x = 1,060,426.16 × 620,724.12
  4. Step 4: Simplify right side
    710,405.70x = 658,232,094,990.98
  5. Step 5: Solve for x
    x = 658,232,094,990.98/710,405.70
  6. Step 6: Final answer
    x = 926,558.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.