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Finding the Fourth Proportional to 661,623.88, 912,234 and 559,466.68

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Solution

The fourth proportional to 661,623.88, 912,234 and 559,466.68 is: 771,381.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,623.88 : 912,234 = 559,466.68 : x
  2. Step 2: Convert to fraction form
    661,623.88/912,234 = 559,466.68/x
  3. Step 3: Cross multiply
    661,623.88x = 912,234 × 559,466.68
  4. Step 4: Simplify right side
    661,623.88x = 510,364,527,363.12
  5. Step 5: Solve for x
    x = 510,364,527,363.12/661,623.88
  6. Step 6: Final answer
    x = 771,381.66

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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.