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Finding the Fourth Proportional to 434,831.40, 607,519.80 and 434,831.40

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Solution

The fourth proportional to 434,831.40, 607,519.80 and 434,831.40 is: 607,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,831.40 : 607,519.80 = 434,831.40 : x
  2. Step 2: Convert to fraction form
    434,831.40/607,519.80 = 434,831.40/x
  3. Step 3: Cross multiply
    434,831.40x = 607,519.80 × 434,831.40
  4. Step 4: Simplify right side
    434,831.40x = 264,168,685,161.72
  5. Step 5: Solve for x
    x = 264,168,685,161.72/434,831.40
  6. Step 6: Final answer
    x = 607,519.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.