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Finding the Fourth Proportional to 93,348.71, 128,828.93 and 53,075.15

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Solution

The fourth proportional to 93,348.71, 128,828.93 and 53,075.15 is: 73,248.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,348.71 : 128,828.93 = 53,075.15 : x
  2. Step 2: Convert to fraction form
    93,348.71/128,828.93 = 53,075.15/x
  3. Step 3: Cross multiply
    93,348.71x = 128,828.93 × 53,075.15
  4. Step 4: Simplify right side
    93,348.71x = 6,837,614,518.71
  5. Step 5: Solve for x
    x = 6,837,614,518.71/93,348.71
  6. Step 6: Final answer
    x = 73,248.09

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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.