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Finding the Fourth Proportional to 586,574.07, 809,332.65 and 357,128.73

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Solution

The fourth proportional to 586,574.07, 809,332.65 and 357,128.73 is: 492,752.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,574.07 : 809,332.65 = 357,128.73 : x
  2. Step 2: Convert to fraction form
    586,574.07/809,332.65 = 357,128.73/x
  3. Step 3: Cross multiply
    586,574.07x = 809,332.65 × 357,128.73
  4. Step 4: Simplify right side
    586,574.07x = 289,035,941,442.04
  5. Step 5: Solve for x
    x = 289,035,941,442.04/586,574.07
  6. Step 6: Final answer
    x = 492,752.67

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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.