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Finding the Fourth Proportional to 614,387.88, 847,152.90 and 499,351.68

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Solution

The fourth proportional to 614,387.88, 847,152.90 and 499,351.68 is: 688,534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,387.88 : 847,152.90 = 499,351.68 : x
  2. Step 2: Convert to fraction form
    614,387.88/847,152.90 = 499,351.68/x
  3. Step 3: Cross multiply
    614,387.88x = 847,152.90 × 499,351.68
  4. Step 4: Simplify right side
    614,387.88x = 423,027,223,831.87
  5. Step 5: Solve for x
    x = 423,027,223,831.87/614,387.88
  6. Step 6: Final answer
    x = 688,534.45

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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.