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Finding the Fourth Proportional to 702,386.40, 1,052,024.40 and 577,970.40

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Solution

The fourth proportional to 702,386.40, 1,052,024.40 and 577,970.40 is: 865,675.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,386.40 : 1,052,024.40 = 577,970.40 : x
  2. Step 2: Convert to fraction form
    702,386.40/1,052,024.40 = 577,970.40/x
  3. Step 3: Cross multiply
    702,386.40x = 1,052,024.40 × 577,970.40
  4. Step 4: Simplify right side
    702,386.40x = 608,038,963,277.76
  5. Step 5: Solve for x
    x = 608,038,963,277.76/702,386.40
  6. Step 6: Final answer
    x = 865,675.88

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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.