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Finding the Fourth Proportional to 690,415.84, 953,068.44 and 464,192.56

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Solution

The fourth proportional to 690,415.84, 953,068.44 and 464,192.56 is: 640,783.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,415.84 : 953,068.44 = 464,192.56 : x
  2. Step 2: Convert to fraction form
    690,415.84/953,068.44 = 464,192.56/x
  3. Step 3: Cross multiply
    690,415.84x = 953,068.44 × 464,192.56
  4. Step 4: Simplify right side
    690,415.84x = 442,407,279,018.81
  5. Step 5: Solve for x
    x = 442,407,279,018.81/690,415.84
  6. Step 6: Final answer
    x = 640,783.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.