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Finding the Fourth Proportional to 615,168,039.40, 859,622,823.80 and 615,168,039.40

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Solution

The fourth proportional to 615,168,039.40, 859,622,823.80 and 615,168,039.40 is: 859,622,823.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,168,039.40 : 859,622,823.80 = 615,168,039.40 : x
  2. Step 2: Convert to fraction form
    615,168,039.40/859,622,823.80 = 615,168,039.40/x
  3. Step 3: Cross multiply
    615,168,039.40x = 859,622,823.80 × 615,168,039.40
  4. Step 4: Simplify right side
    615,168,039.40x = 528,812,487,140,537,600
  5. Step 5: Solve for x
    x = 528,812,487,140,537,600/615,168,039.40
  6. Step 6: Final answer
    x = 859,622,823.80

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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.