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Finding the Fourth Proportional to 592,397.76, 817,509.15 and 320,465.60

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Solution

The fourth proportional to 592,397.76, 817,509.15 and 320,465.60 is: 442,242.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,397.76 : 817,509.15 = 320,465.60 : x
  2. Step 2: Convert to fraction form
    592,397.76/817,509.15 = 320,465.60/x
  3. Step 3: Cross multiply
    592,397.76x = 817,509.15 × 320,465.60
  4. Step 4: Simplify right side
    592,397.76x = 261,983,556,172.69
  5. Step 5: Solve for x
    x = 261,983,556,172.69/592,397.76
  6. Step 6: Final answer
    x = 442,242.65

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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.