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Finding the Fourth Proportional to 621,365.36, 932,981.16 and 355,426.16

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Solution

The fourth proportional to 621,365.36, 932,981.16 and 355,426.16 is: 533,672.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,365.36 : 932,981.16 = 355,426.16 : x
  2. Step 2: Convert to fraction form
    621,365.36/932,981.16 = 355,426.16/x
  3. Step 3: Cross multiply
    621,365.36x = 932,981.16 × 355,426.16
  4. Step 4: Simplify right side
    621,365.36x = 331,605,911,051.15
  5. Step 5: Solve for x
    x = 331,605,911,051.15/621,365.36
  6. Step 6: Final answer
    x = 533,672.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.