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Finding the Fourth Proportional to 704,685.16, 972,466.18 and 402,885.48

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Solution

The fourth proportional to 704,685.16, 972,466.18 and 402,885.48 is: 555,982.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,685.16 : 972,466.18 = 402,885.48 : x
  2. Step 2: Convert to fraction form
    704,685.16/972,466.18 = 402,885.48/x
  3. Step 3: Cross multiply
    704,685.16x = 972,466.18 × 402,885.48
  4. Step 4: Simplify right side
    704,685.16x = 391,792,503,713.07
  5. Step 5: Solve for x
    x = 391,792,503,713.07/704,685.16
  6. Step 6: Final answer
    x = 555,982.34

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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.